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d
1: denoting a quantity consisting of 500 items or units [syn: {five hundred}, {500}] n 1: a fat-soluble vitamin that prevents rickets [syn: {vitamin D}, {calciferol}, {viosterol}, {ergocalciferol}, {c...
D and C
1: a surgical procedure usually performed under local anesthesia in which the cervix is dilated and the endometrial lining of the uterus is scraped with a curet; performed to obtain tissue samples or ...
D region
1: the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves [syn: {D-layer}]
D'Oyly Carte
1: English impresario who brought Gilbert and Sullivan together and produced many of their operettas in London (1844-1901) [syn: {Richard D'Oyly Carte}]
D-day
1: day of the allied landing in France, World War II [syn: {6 June 1944}]
D-layer
1: the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves [syn: {D region}]
D. H. Lawrence
1: English novelist and poet and essayist whose work condemned industrial society and explored sexual relationships (1885-1930) [syn: {Lawrence}, {David Herbert Lawrence}]
D. W. Griffith
1: United States film maker who was the first to use flashbacks and fade-outs (1875-1948) [syn: {Griffith}, {David Lewelyn Wark Griffith}]
D.C.
1: the district occupied entirely by the city of Washington; chosen by George Washington as the site of the nation's capital and carve out of land ceded by Maryland and Virginia [syn: {District of Col...
d.o.a.
1: abbreviation for `dead on arrival' at the emergency room
D.P.R.K.
1: a communist country in the northern half of the Korean Peninsula; established in 1948; involved in state-sponsored terrorism [syn: {North Korea}, {Democratic People's Republic of Korea}, {DPRK}]
DA
1: an official prosecutor for a judicial district [syn: {district attorney}]
da Gamma
1: Portuguese navigator who led an expedition around the Cape of Good Hope in 1497; he sighted and named Natal on Christmas Day before crossing the Indian Ocean (1469-1524) [syn: {Vasco da Gamma}, {Ga...
da Vinci
1: Italian painter and sculptor and engineer and scientist and architect; the most versatile genius of the Italian Renaissance (1452-1519) [syn: {Leonardo}, {Leonardo da Vinci}]
da'wah
1: missionary work for Islam [syn: {dawah}]
dab
1: a light touch or stroke [syn: {tap}, {pat}] 2: a small quantity of something moist or soft; "a dab of paint"; "a splatter of mud" [syn: {splash}, {splatter}] v 1: apply (usually a liquid) to a surf...
Daba
1: a Chadic language spoken south of Lake Chad [syn: {Kola}, {Musgoi}]
dabbed
{dab}
dabbing
{dab}
dabble
1: dip a foot or hand briefly into a liquid 2: play in or as if in water, as of small children [syn: {paddle}, {splash around}] 3: work with in a non-serious manner; "She dabbles in astronomy"; "He pl...
dabbled
1: covered patchily; often used in combination; "waves dabbled with moonlight"; "a blood-spattered room"; "gardens splashed with color"; "kitchen walls splattered with grease" [syn: {spattered}, {spla...
dabbler
1: an amateur who engages in an activity without serious intentions and who pretends to have knowledge [syn: {dilettante}, {sciolist}] 2: any of numerous shallow-water ducks that feed by upending and ...
dabbling duck
1: any of numerous shallow-water ducks that feed by upending and dabbling [syn: {dabbler}] [ant: {diving duck}]
dabchick
1: small European grebe [syn: {little grebe}, {Podiceps ruficollis}]
Daboecia
1: a dicotyledonous genus of the family Ericaceae [syn: {genus Daboecia}]
Daboecia cantabrica
1: low straggling evergreen shrub of western Europe represented by several varieties with flowers from white to rose-purple [syn: {Connemara heath}, {St. Dabeoc's heath}]
Dacca
1: the capital and largest city of Bangladesh [syn: {Dhaka}, {capital of Bangladesh}]
dace
1: small European freshwater fish with a slender bluish-green body [syn: {Leuciscus leuciscus}]
Dacelo
1: Australasian kingfishers [syn: {genus Dacelo}]
Dacelo gigas
1: Australian kingfisher having a loud cackling cry [syn: {kookaburra}, {laughing jackass}]
dacha
1: Russian country house
Dachau
1: a concentration camp for Jews created by the Nazis near Munich in southern Germany
dachshund
1: small long-bodied short-legged German breed of dog having a short sleek coat and long drooping ears; suited for following game into burrows [syn: {dachsie}, {badger dog}]
dachsie
1: small long-bodied short-legged German breed of dog having a short sleek coat and long drooping ears; suited for following game into burrows [syn: {dachshund}, {badger dog}]
dacite
1: a gray volcanic rock containing plagioclase and quartz and other crystalline minerals
dacitic
1: relating to or consisting of dacite; "dacitic magma is highly viscous"
Dacninae
1: the honeycreepers [syn: {Coerebidae}, {family Coerebidae}, {family Dacninae}]
dacoit
1: a member of an armed gang of robbers [syn: {dakoit}]
dacoity
1: robbery by a gang of armed dacoits [syn: {dakoity}]
Dacridium laxifolius
1: low-growing to prostrate shrub with slender trailing branches; New Zealand [syn: {mountain rimu}, {Lepidothamnus laxifolius}]
Dacron
1: a kind of polyester fabric [syn: {Terylene}]
Dacrycarpus
1: evergreen coniferous shrubs or trees of New Zealand to Malaysia and Philippines [syn: {genus Dacrycarpus}]
Dacrycarpus dacrydioides
1: New Zealand evergreen valued for its light easily worked wood [syn: {kahikatea}, {New Zealand Dacryberry}, {New Zealand white pine}, {Podocarpus dacrydioides}]
Dacrydium
1: Australasian evergreen trees or shrubs [syn: {genus Dacrydium}]
Dacrydium bidwilli
1: New Zealand shrub [syn: {tarwood}, {tar-wood}, {New Zealand mountain pine}, {Halocarpus bidwilli}]
Dacrydium colensoi
1: New Zealand silver pine of conical habit with long slender flexuous branches; adapted to cold wet summers and high altitudes [syn: {tarwood}, {tar-wood}]
Dacrydium cupressinum
1: tall New Zealand timber tree [syn: {rimu}, {imou pine}, {red pine}]
Dacrydium franklinii
1: Tasmanian timber tree with yellow aromatic wavy-grained wood used for carving and ship building; sometimes placed in genus Dacrydium [syn: {huon pine}, {Lagarostrobus franklinii}]
Dacrymyces
1: type genus of the Dacrymycetaceae: fungi with a bifurcate basidium that lacks septa [syn: {genus Dacrymyces}]
Dacrymycetaceae
1: a family of basidiomycetous fungi belonging to the order Tremellales having a bifurcate basidium that lacks septa [syn: {family Dacrymycetaceae}]
dacryocyst
1: either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands [syn: {lacrimal sac}, {tear sac}]
dacryocystitis
1: inflammation of the lacrimal sac causing obstruction of the tube draining tears into the nose
dacryon
1: the craniometric point at the junction of the anterior border of the lacrimal bone with the frontal bone
dactyl
1: a metrical unit with stressed-unstressed-unstressed syllables 2: a finger or toe in human beings or corresponding part in other vertebrates [syn: {digit}]
dactylic
1: of or consisting of dactyls; "dactylic meter"
Dactylis
1: a monocotyledonous grass of the family Gramineae (has only one species) [syn: {genus Dactylis}]
Dactylis glomerata
1: widely grown stout Old World hay and pasture grass [syn: {orchard grass}, {cocksfoot}, {cockspur}]
Dactyloctenium
1: a monocotyledonous genus of the family Gramineae [syn: {genus Dactyloctenium}]
Dactyloctenium aegypticum
1: a creeping grass with spikes like fingers [syn: {Egyptian grass}, {crowfoot grass}]
dactylomegaly
1: abnormally large fingers or toes
Dactylopiidae
1: cochineal insects [syn: {family Dactylopiidae}]
Dactylopius
1: type genus of the Dactylopiidae [syn: {genus Dactylopius}]
Dactylopius coccus
1: Mexican red scale insect that feeds on cacti; the source of a red dye [syn: {cochineal insect}, {cochineal}]
Dactylopteridae
1: flying gurnards [syn: {family Dactylopteridae}]
Dactylopterus
1: a genus of Dactylopteridae [syn: {genus Dactylopterus}]
Dactylorhiza
1: genus of terrestrial orchids of Europe and Asia and North Africa [syn: {genus Dactylorhiza}]
Dactylorhiza fuchsii
1: European orchid having lanceolate leaves spotted purple and pink to white or mauve flowers spotted or lined deep red or purple [syn: {common spotted orchid}, {Dactylorhiza maculata fuchsii}]
Dactylorhiza maculata fuchsii
1: European orchid having lanceolate leaves spotted purple and pink to white or mauve flowers spotted or lined deep red or purple [syn: {common spotted orchid}, {Dactylorhiza fuchsii}]
Dactyloscopidae
1: sand stargazers [syn: {family Dactyloscopidae}]
dad
1: an informal term for a father; probably derived from baby talk [syn: {dada}, {daddy}, {pa}, {papa}, {pappa}, {pater}, {pop}]
dada
1: an informal term for a father; probably derived from baby talk [syn: {dad}, {daddy}, {pa}, {papa}, {pappa}, {pater}, {pop}] 2: a nihilistic art movement (especially in painting) that flourished in ...
dadaism
1: a nihilistic art movement (especially in painting) that flourished in Europe early in the 20th century; based on irrationality and negation of the accepted laws of beauty [syn: {dada}]
daddy
1: an informal term for a father; probably derived from baby talk [syn: {dad}, {dada}, {pa}, {papa}, {pappa}, {pater}, {pop}]
daddy longlegs
1: long-legged slender flies that resemble large mosquitoes but do not bite [syn: {crane fly}] 2: spider-like arachnid with a small rounded body and very long thin legs [syn: {harvestman}, {Phalangium...
dado
1: panel forming the lower part of an interior wall when it is finished differently from the rest [syn: {wainscot}] 2: the section of a pedestal between the base and the surbase 3: a rectangular groov...
dado plane
1: a plane for making a dado groove
dadoes
{dado}
daedal
1: complex and ingenious in design or function; "the daedal hand of nature" n : (Greek mythology) an Athenian inventor who built the Labyrinth of Minos; to escape the Labyrinth he fashioned wings for ...
Daedalus
1: (Greek mythology) an Athenian inventor who built the Labyrinth of Minos; to escape the Labyrinth he fashioned wings for himself and his sone Icarus [syn: {Daedal}]
daemon
1: one of the evil spirits of traditional Jewish and Christian belief [syn: {devil}, {fiend}, {demon}, {daimon}] 2: a person who is part mortal and part god [syn: {demigod}]
daffier
{daffy}
daffiest
{daffy}
Daffo
1: a Chadic language spoken in northern Nigeria [syn: {Ron}, {Bokkos}]
daffodil
1: any of numerous varieties of Narcissus plants having showy often yellow flowers with a trumpet-shaped central crown [syn: {Narcissus pseudonarcissus}]
daffodil garlic
1: European onion with white flowers [syn: {flowering onion}, {Naples garlic}, {Allium neopolitanum}]
Dafla
1: little known Kamarupan languages [syn: {Miri}, {Mirish}, {Abor}]
daft
1: informal or slang terms for mentally irregular; "it used to drive my husband balmy" [syn: {balmy}, {barmy}, {bats}, {batty}, {bonkers}, {buggy}, {cracked}, {crackers}, {dotty}, {fruity}, {haywire},...
daftly
1: in a mildly insane manner; "the old lady is beginning to behave quite dottily" [syn: {dottily}, {balmily}, {nuttily}, {wackily}]
daftness
1: informal terms for insanity [syn: {craziness}, {flakiness}]
dag
1: 10 grams [syn: {dekagram}, {decagram}, {dkg}] 2: a flap along the edge of a garment; used in medieval clothing [syn: {jag}] [also: {dagging}, {dagged}]
Dag Hammarskjold
1: Swedish diplomat who greatly extended the influence of the United Nations in peace-keeping matters (1905-1961) [syn: {Hammarskjold}, {Dag Hjalmar Agne Carl Hammarskjold}]
Dag Hjalmar Agne Carl Hammarskjold
1: Swedish diplomat who greatly extended the influence of the United Nations in peace-keeping matters (1905-1961) [syn: {Hammarskjold}, {Dag Hammarskjold}]
dagame
1: source of a tough elastic wood [syn: {lemonwood tree}, {Calycophyllum candidissimum}]
Dagan
1: god of agriculture and earth; counterpart of Phoenician Dagon
Dagda
1: chief Celtic god of the Tuatha De Danann; father of Angus Og and Brigit
Dagestani
1: an ethnic minority living on the Caspian Sea in southwestern Russia and Azerbaijan
dagga
1: relatively nontoxic South African herb smoked like tobacco [syn: {Cape dagga}, {red dagga}, {wilde dagga}, {Leonotis leonurus}]
dagged
{dag}
dagger
1: a short knife with a pointed blade used for piercing or stabbing [syn: {sticker}] 2: a character used in printing to indicate a cross reference or footnote [syn: {obelisk}]
dagger fern
1: North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds [syn: {Christmas fern}, {canker brake}, {evergreen wood fern}, {Polystichum acrostichoides}]
daggerboard
1: a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel
dagging
{dag}
dago
1: offensive terms for a person of Italian descent [syn: {wop}, {Guinea}, {greaseball}] [also: {dagoes} (pl)]
dagoes
{dago}
Dagon
1: god of agriculture and the earth; national god of Philistines
Daguerre
1: French inventor of the first practical photographic process, the daguerreotype (1789-1851) [syn: {Louis Jacques Mande Daguerre}]
daguerreotype
1: a photograph made by an early photographic process; the image was produced on a silver plate sensitized to iodine and developed in mercury vapor
dah
1: the longer of the two telegraphic signals used in Morse code [syn: {dash}]
dahl
1: tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics [syn: {pigeon pea}, {pigeon-pea plant}, {cajan pea}, {catjang pea}, {red gram}, {dhal}, {Cajanus cajan}] ...
dahlia
1: any of several plants of or developed from the species Dahlia pinnata having tuberous roots and showy rayed variously colored flower heads; native to the mountains of Mexico and Central America and...
Dahlia pinnata
1: any of several plants of or developed from the species Dahlia pinnata having tuberous roots and showy rayed variously colored flower heads; native to the mountains of Mexico and Central America and...
Dahomey
1: a country on western coast of Africa; formerly under French control [syn: {Benin}, {Republic of Benin}]
daikon
1: radish of Japan with a long hard durable root eaten raw or cooked [syn: {Japanese radish}, {Raphanus sativus longipinnatus}]
Dail
1: the lower house of the parliament of the Irish Free State [syn: {Dail Eireann}]
Dail Eireann
1: the lower house of the parliament of the Irish Free State [syn: {Dail}]
daily
1: occurring or done each day; "a daily record"; "day-by-day labors of thousands of men and women"- H.S.Truman; "her day-after-day behavior"; "an every day occurrence" [syn: {day-to-day}, {day-after-d...
daily dew
1: any of various bog plants of the genus Drosera having leaves covered with sticky hairs that trap and digest insects; cosmopolitan in distribution [syn: {sundew}, {sundew plant}]
daily double
1: a single bet on two horse races in the same day
daily round
1: the usual activities in your day; "the doctor made his rounds" [syn: {round}]
daily variation
1: fluctuations that occur between one day and the next
Daimler
1: German engineer and automobile manufacturer who produced the first high-speed internal combustion engine (1834-1900) [syn: {Gottlieb Daimler}]
daimon
1: one of the evil spirits of traditional Jewish and Christian belief [syn: {devil}, {fiend}, {demon}, {daemon}]
daintier
{dainty}
daintiest
{dainty}
daintily
1: in a refined manner; "she nibbled daintily at her cake" 2: in a delicate manner; "the invitation cards were written up daintily in white and gold"
daintiness
1: the quality of being beautiful and delicate in appearance; "the daintiness of her touch"; "the fineness of her features" [syn: {delicacy}, {fineness}]
dainty
1: affectedly dainty or refined [syn: {mincing}, {niminy-piminy}, {prim}, {twee}] 2: of delicate composition and artistry; "a dainty teacup"; "an exquisite cameo" [syn: {exquisite}] 3: especially plea...
daiquiri
1: a cocktail made with rum and lime or lemon juice [syn: {rum cocktail}]
dairy
1: a farm where dairy products are produced [syn: {dairy farm}]
dairy cattle
1: cattle that are reared for their milk [syn: {dairy cow}, {milch cow}, {milk cow}, {milcher}, {milker}]
dairy cow
1: cattle that are reared for their milk [syn: {dairy cattle}, {milch cow}, {milk cow}, {milcher}, {milker}]
dairy farm
1: a farm where dairy products are produced [syn: {dairy}]
dairy farmer
1: the owner or manager of a dairy [syn: {dairyman}]
dairy farming
1: the business of a dairy [syn: {dairying}]
dairy product
1: milk and butter and cheese
dairying
1: the business of a dairy [syn: {dairy farming}]
dairymaid
1: a woman who works in a dairy [syn: {milkmaid}]
dairyman
1: the owner or manager of a dairy [syn: {dairy farmer}] 2: a man who works in a diary
dais
1: a platform raised above the surrounding level to give prominence to the person on it [syn: {podium}, {pulpit}, {rostrum}, {ambo}, {stump}, {soapbox}]
daishiki
1: a loose and brightly colored African shirt [syn: {dashiki}]
daisy
1: any of numerous composite plants having flower heads with well-developed ray flowers usually arranged in a single whorl
daisy bush
1: any of various mostly Australian attractively shaped shrubs of the genus Olearia grown for their handsome and sometimes fragrant evergreen foliage and profusion of daisy flowers with white or purpl...
daisy chain
1: (figurative) a series of associated things or people or experiences 2: flower chain consisting of a string of daisies linked by their stems; worn by students on class day at some schools
daisy cutter
1: a bomb with only 10 to 20 per cent explosive and the remainder consisting of casings designed to break into many small high-velocity fragments; most effective against troops and vehicles [syn: {fra...
daisy fleabane
1: widely naturalized white-flowered North American herb [syn: {Erigeron annuus}]
daisy print wheel
1: a wheel around which is a set of print characters that make a typing impression on paper [syn: {daisy wheel}]
daisy wheel
1: a wheel around which is a set of print characters that make a typing impression on paper [syn: {daisy print wheel}]
daisy-bush
1: any of various mostly Australian attractively shaped shrubs of the genus Olearia grown for their handsome and sometimes fragrant evergreen foliage and profusion of daisy flowers with white or purpl...
daisy-chain
1: connect devices on a part of a chip or circuit board in a computer
daisy-leaved grape fern
1: of North America and Eurasia [syn: {daisyleaf grape fern}, {Botrychium matricariifolium}]
daisybush
1: any of various mostly Australian attractively shaped shrubs of the genus Olearia grown for their handsome and sometimes fragrant evergreen foliage and profusion of daisy flowers with white or purpl...
daisyleaf grape fern
1: of North America and Eurasia [syn: {daisy-leaved grape fern}, {Botrychium matricariifolium}]
daisylike
1: resembling a daisy
daisywheel printer
1: a printer that uses a daisy print wheel
dak
1: East Indian tree bearing a profusion of intense vermilion velvet-textured blooms and yielding a yellow dye [syn: {dhak}, {palas}, {Butea frondosa}, {Butea monosperma}]
Dakar
1: the capital and chief port and largest city of Senegal [syn: {capital of Senegal}]
dakoit
1: a member of an armed gang of robbers [syn: {dacoit}]
dakoity
1: robbery by a gang of armed dacoits [syn: {dacoity}]
Dakota
1: a member of the Siouan people of the northern Mississippi valley; commonly called the Sioux 2: the area of the states of North Dakota and South Dakota 3: the Siouan language spoken by the Dakota pe...
dal
1: a metric unit of volume or capacity equal to 10 liters [syn: {dekaliter}, {dekalitre}, {decaliter}, {decalitre}, {dkl}]
Dalai Lama
1: chief lama and once ruler of Tibet [syn: {Grand Lama}]
dalasi
1: the basic unit of money in Gambia
Dalbergia
1: large genus of tropical trees having pinnate leaves and paniculate flowers and cultivated commercially for their dramatically grained and colored timbers [syn: {genus Dalbergia}]
Dalbergia cearensis
1: Brazilian tree yielding a handsome cabinet wood [syn: {kingwood}, {kingwood tree}]
Dalbergia latifolia
1: East Indian tree having a useful dark purple wood [syn: {Indian blackwood}, {East Indian rosewood}, {East India rosewood}, {Indian rosewood}]
Dalbergia nigra
1: an important Brazilian timber tree yielding a heavy hard dark-colored wood streaked with black [syn: {Brazilian rosewood}, {caviuna wood}, {jacaranda}]
Dalbergia retusa
1: a valuable timber tree of tropical South America [syn: {cocobolo}]
Dalbergia sissoo
1: East Indian tree whose leaves are used for fodder; yields a compact dark brown durable timber used in shipbuilding and making railroad ties [syn: {sissoo}, {sissu}, {sisham}]
Dalbergia stevensonii
1: Central American tree yielding a valuable dark streaked rosewood [syn: {Honduras rosewood}]
dale
1: an open river valley (in a hilly area)
Dale Carnegie
1: United States educator famous for writing a book about how to win friends and influence people (1888-1955) [syn: {Carnegie}]
Dalea
1: indigo bush [syn: {genus Dalea}]
Dalea spinosa
1: grayish-green shrub of desert regions of southwestern United States nd Mexico having sparse foliage and terminal spikes of bluish violet flowers; locally important as source of a light-colored hone...
dalesman
1: a person who lives in the dales of northern England
daleth
1: the 4th letter of the Hebrew alphabet
Dali
1: surrealist Spanish painter (1904-1989) [syn: {Salvidor Dali}]
Dall sheep
1: large white wild sheep of northwestern Canada and Alaska [syn: {Dall's sheep}, {white sheep}, {Ovis montana dalli}]
Dall's sheep
1: large white wild sheep of northwestern Canada and Alaska [syn: {Dall sheep}, {white sheep}, {Ovis montana dalli}]
Dallas
1: a large commercial and industrial city in northeastern Texas located in the heart of the northern Texas oil fields
dalliance
1: the deliberate act of wasting time instead of working [syn: {dawdling}, {trifling}, {wasting time}] 2: playful behavior intended to arouse sexual interest [syn: {flirt}, {flirting}, {flirtation}, {...
dallied
{dally}
dallier
1: someone who wastes time [syn: {dillydallier}, {dilly-dallier}, {mope}, {lounger}]
dallis grass
1: tall tufted perennial tropical American grass naturalized as pasture and forage grass in southern United States [syn: {dallisgrass}, {paspalum}, {Paspalum dilatatum}]
dallisgrass
1: tall tufted perennial tropical American grass naturalized as pasture and forage grass in southern United States [syn: {dallis grass}, {paspalum}, {Paspalum dilatatum}]
dally
1: behave carelessly or indifferently; "Play about with a young girl's affection" [syn: {toy}, {play}, {flirt}] 2: waste time; "Get busy--don't dally!" [syn: {dawdle}] 3: talk or behave amorously, wit...
Dalmane
1: tranquilizer (trade name Dalmane) used to treat insomnia [syn: {flurazepam}, {flurazepam hydrochloride}]
Dalmatia
1: a historical region of Croatia on the Adriatic Sea; mountainous with many islands
Dalmatia pyrethrum
1: white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum [syn: {pyrethrum}, {Dalmatian pyrethr...
Dalmatian
1: of or relating to Dalmatia or its inhabitants n 1: a native or inhabitant of Dalmatia 2: a large breed having a smooth white coat with black or brown spots; originated in Dalmatia [syn: {coach dog}...
Dalmatian iris
1: European iris having soft lilac-blue flowers [syn: {Iris pallida}]
Dalmatian laburnum
1: erect shrub having large trifoliate leaves and dense clusters of yellow flowers followed by poisonous seeds; Yugoslavia; sometimes placed in genus Cytisus [syn: {Petteria ramentacea}, {Cytisus rame...
Dalmatian pyrethrum
1: white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum [syn: {pyrethrum}, {Dalmatia pyrethru...
dalo
1: herb of the Pacific islands grown throughout the tropics for its edible root and in temperate areas as an ornamental for its large glossy leaves [syn: {taro}, {taro plant}, {dasheen}, {Colocasia es...
Dalton
1: English chemist and physicist who formulated atomic theory and the law of partial pressures; gave the first description of red-green color blindness (1766-1844) [syn: {John Dalton}]
Dalton Trumbo
1: United States screenwriter who was blacklisted and imprisoned for refusing to cooperate with congressional investigations of communism in America (1905-1976) [syn: {Trumbo}]
Dalton's law
1: (chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple re...
Dalton's law of partial pressures
1: (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals th...
Daltonism
1: dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red [syn: {deuteranopia}, {green-blindness}]
dam
1: a barrier constructed to contain the flow of water or to keep out the sea [syn: {dike}, {dyke}, {levee}] 2: a metric unit of length equal to ten meters [syn: {decameter}, {dekameter}, {decametre}, ...
dam up
1: obstruct with, or as if with, a dam; "dam the gorges of the Yangtse River" [syn: {dam}]
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