1: being one more than nine [syn: {ten}, {10}] n 1: the cardinal number that is the sum of nine and one; the base of the decimal system [syn: {ten}, {10}, {tenner}, {decade}] 2: the 24th letter of the...

1: the sex chromosome that is present in both sexes: singly in males and doubly in females; "human females normally have two X chromosomes"

1: electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target [syn: {X-radiation}, {roentgen ray}] 2: a radiogram made by exposing photographic film to X ra...

1: the horizontal axis in a plane coordinate system

1: relating to genes or characteristics or conditions carried on the X chromosome; "an X-linked mutation"

1: hereditary pattern in which a dominant gene on the X chromosome causes a characteristic to be manifested in the offspring

1: a gene located on an X chromosome

1: hereditary pattern in which a recessive gene on the X chromosome results in the manifestation of characteristics in male offspring and a carrier state in female offspring

1: SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor [syn: {X-SCID}]

1: gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire [syn: {XOR circuit}, {XOR gate}]

1: electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target [syn: {X ray}, {roentgen ray}] 2: obtaining images by the use of X rays [syn: {X-raying}]

1: examine by taking x-rays 2: take an x-ray of something or somebody; "The doctor x-rayed my chest"

1: the scattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal

1: photographic film used to make X-ray pictures

1: an apparatus that provides a source of X rays

1: a radiogram made by exposing photographic film to X rays; used in medical diagnosis [syn: {roentgenogram}, {X ray}, {X-ray picture}]

1: radiography that uses X-rays to produce a roentgenogram [syn: {roentgenography}]

1: a radiogram made by exposing photographic film to X rays; used in medical diagnosis [syn: {roentgenogram}, {X ray}, {X-ray photograph}]

1: the therapeutic use of X rays

1: a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays

1: obtaining images by the use of X rays [syn: {X-radiation}]

1: SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor [syn: {X-linked SCID}]

1: an antianxiety agent (trade name Xanax) of the benzodiazepine class [syn: {alprazolam}]

1: a salt or ester of xanthic acid

1: xanthoma of the eyelids; occurs chiefly in the elderly

1: excess carotene in the blood stream; can cause the skin to turn a pale yellow-red color [syn: {carotenemia}]

1: any of a class of unstable organic acids containing sulphur

1: crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine

1: coarse herbs having small heads of greenish flowers followed by burrs with hooked bristles [syn: {genus Xanthium}]

1: a skin problem marked by the development (on the eyelids and neck and back) of irregular yellow nodules; sometimes attributable to disturbances of cholesterol metabolism

1: rare chronic xanthoma of adults n which orange or brownish papules develop on many surfaces of the body

1: widespread xanthomas (especially on elbows and knees); often associated with a disorder of lipid metabolism [syn: {xanthomatosis}, {cholesterosis cutis}, {lipid granulomatosis}, {lipoid granulomato...

1: widespread xanthomas (especially on elbows and knees); often associated with a disorder of lipid metabolism [syn: {xanthoma multiplex}, {cholesterosis cutis}, {lipid granulomatosis}, {lipoid granul...

1: bacteria producing yellow non-water-soluble pigments; some pathogenic for plants

1: a genus of bacteria similar to Pseudomonas but producing a yellow pigment that is not soluble in water [syn: {genus Xanthomonas}]

1: yellow-green algae [syn: {class Xanthophyceae}]

1: yellow carotenoid pigments in plants and animal fats and egg yolks [syn: {xanthophyll}, {lutein}]

1: yellow carotenoid pigments in plants and animal fats and egg yolks [syn: {xanthophyl}, {lutein}]

1: visual defect in which objects appear to have a yellowish hue; sometimes occurs in cases of jaundice

1: one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted [syn: {family Xanthorrhoeaceae}, {grass tree family}]

1: grass trees; sometimes placed in family Xanthorrhoeaceae [syn: {genus Xanthorroea}]

1: an abnormal yellow discoloration of the skin

1: tropical American tuberous perennials [syn: {genus Xanthosoma}]

1: tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes [syn: {yautia}, {tannia}, {spoonflower}, {malanga}, {Xanthosoma sagittifolium}]

1: tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes [syn: {yautia}, {tannia}, {spoonflower}, {malanga}, {Xanthosoma atrovirens}]

1: similar to the color of an egg yolk [syn: {yellow}, {yellowish}]

1: night lizards [syn: {family Xantusiidae}]

1: Spanish missionary and Jesuit who establish missionaries in Japan and Ceylon and the East Indies (1506-1552) [syn: {Saint Francis Xavier}]

1: being ten more than eighty [syn: {ninety}, {90}] n : the cardinal number that is the product of ten and nine [syn: {ninety}, {90}]

1: being one more than ninety [syn: {ninety-one}, {91}]

1: being two more than ninety [syn: {ninety-two}, {92}]

1: being three more than ninety [syn: {ninety-three}, {93}]

1: being four more than ninety [syn: {ninety-four}, {94}]

1: being ten more than one hundred eighty [syn: {one hundred ninety}, {190}]

1: being five more than ninety [syn: {ninety-five}, {95}]

1: being six more than ninety [syn: {ninety-six}, {96}]

1: being seven more than ninety [syn: {ninety-seven}, {97}]

1: being eight more than ninety [syn: {ninety-eight}, {98}]

1: a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts [syn: {xenon}, {atomic number 54}]

1: armadillos; American anteaters; sloths [syn: {suborder Xenarthra}]

1: alternative names for the family comprising the New Zealand wrens [syn: {family Xenicidae}, {Acanthisittidae}, {family Acanthisittidae}]

1: type genus for the Xenicidae [syn: {genus Xenicus}]

1: short-tailed bird resembling a wren [syn: {rock wren}]

1: the alternation of two or more different forms in the life cycle of a plant or animal [syn: {alternation of generations}, {heterogenesis}]

1: tissue from an animal of one species used as a temporary graft (as in cases of severe burns) on an individual of another species [syn: {heterograft}]

1: (geology) a piece of rock of different origin from the igneous rock in which it is embedded

1: a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts [syn: {Xe}, {atomic number 54}]

1: Greek philosopher (560-478 BC)

1: an irrational fear of foreigners or strangers

1: suffering from xenophobia; having abnormal fear or hatred of the strange or foreign

1: Greek general and historian; student of Socrates (430-355 BC)

1: in some classifications the family of the genus Xenopus which is otherwise included in the family Pipidae [syn: {family Xenopodidae}]

1: an African clawed frog; in some classifications made the type genus of a separate family Xenopodidae [syn: {genus Xenopus}]

1: a tongueless frog native to Africa; established in the United States as result of release of laboratory and aquarium animals [syn: {African clawed frog}]

1: East Indian and Australian storks [syn: {genus Xenorhyncus}]

1: large mostly white Australian stork [syn: {policeman bird}, {black-necked stork}, {jabiru}]

1: monotypic family of Mexican lizards [syn: {family Xenosauridae}]

1: type and sole genus of Xenosauridae: slender-bodied Mexican lizards having the upper surface covered with tiny granules and tubercles [syn: {genus Xenosaurus}]

1: a brown-to-yellow mineral that is a phosphate of yttrium in crystalline form

1: a surgical procedure in which tissue or whole organs are transfered from one species to another species [syn: {xenotransplantation}]

1: a surgical procedure in which tissue or whole organs are transfered from one species to another species [syn: {xenotransplant}]

1: any plant of the genus Xeranthemum native to southern Europe having chaffy or silvery flower heads with purplish tubular flowers

1: mostly widely cultivated species of everlasting flowers having usually purple flowers; southern Europe to Iran; naturalized elsewhere [syn: {immortelle}]

1: being deficient in moisture; "deserts provide xeric environments" [ant: {hydric}, {mesic}]

1: possible new genus for desert and Texas tortoises based on recent research [syn: {genus Xerobates}]

1: a mild form of ichthyosis characterized by abnormal dryness and roughness of the skin [syn: {xerodermia}]

1: a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair p...

1: a mild form of ichthyosis characterized by abnormal dryness and roughness of the skin [syn: {xeroderma}]

1: of or relating to xerography

1: duplicator that copies graphic matter by the action of light on an electrically charged photoconductive insulating surface in which the latent image is developed with a resinous powder [syn: {Xerox...

1: a page printer that uses the xerographic process

1: forming an image by the action of light on a specially coated charged plate; the latent image is developed with powders that adhere only to electrically charged areas; "edge enhancement is intrinsi...

1: abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A [syn: {xerophthalmia}, {xerophthalmus}, {conjunctivitis arida}]

1: plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte [syn: {desert plant}, {xerophyte}, {xerophytic plant}, {xerophilous plant}]

1: plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte [syn: {desert plant}, {xerophyte}, {xerophytic plant}, {xerophile}]

1: abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A [syn: {xerophthalmus}, {xeroma}, {conjunctivitis arida}]

1: abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A [syn: {xerophthalmia}, {xeroma}, {conjunctivitis arida}]

1: small genus of North American herbs having grasslike basal leaves: squaw grass; sometimes placed in family Melanthiaceae [syn: {genus Xerophyllum}]

1: plant of western North America having woody rhizomes and tufts of stiff grasslike basal leaves and spikes of creamy white flowers [syn: {squaw grass}, {bear grass}]

1: plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte [syn: {desert plant}, {xerophytic plant}, {xerophile}, {xerophilous plant}]

1: adapted to a xeric (or dry) environment; "cacti are xerophytic plants"; "xerophytic adaptations"

1: plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte [syn: {desert plant}, {xerophyte}, {xerophile}, {xerophilous plant}]

1: radiography using X-rays and xerographic (rather than roentgenographic) techniques

1: abnormal dryness of the mouth resulting from decreased secretion of saliva [syn: {dry mouth}]

1: the condition of not containing or being covered by a liquid (especially water) [syn: {dryness}, {waterlessness}] [ant: {wetness}]

1: a copy made by the xerox process [syn: {xerox copy}] 2: duplicator that copies graphic matter by the action of light on an electrically charged photoconductive insulating surface in which the laten...

1: a copy made by the xerox process [syn: {xerox}]

1: duplicator that copies graphic matter by the action of light on an electrically charged photoconductive insulating surface in which the latent image is developed with a resinous powder [syn: {Xerox...

1: king of Persia who led a vast army against Greece and won the battle of Thermopylae but was eventually defeated (519-465 BC) [syn: {Xerxes the Great}]

1: king of Persia who led a vast army against Greece and won the battle of Thermopylae but was eventually defeated (519-465 BC) [syn: {Xerxes I}]

1: bores through wood making a ticking sound popularly thought to presage death [syn: {deathwatch beetle}, {deathwatch}]

1: a Bantu language closely related to Zulu

1: being one more than ten [syn: {eleven}, {11}] n 1: the cardinal number that is the sum of ten and one [syn: {eleven}, {11}] 2: the 14th letter of the Greek alphabet

1: a city of central China; capital of ancient Chinese empire 221-206 BC [syn: {Sian}, {Singan}, {Changan}, {Hsian}]

1: denoting a quantity consisting of 12 items or units [syn: {twelve}, {12}, {dozen}] n : the cardinal number that is the sum of eleven and one [syn: {twelve}, {12}, {dozen}]

1: being one more than twelve [syn: {thirteen}, {13}] n : the cardinal number that is the sum of twelve and one [syn: {thirteen}, {13}, {baker's dozen}, {long dozen}]

1: coarse grayish green annual yellow-flowered herb; southwestern United States to Mexico [syn: {cowpen daisy}, {golden crownbeard}, {golden crown beard}, {butter daisy}, {Verbesina encelioides}]

1: an autonomous province in far northwestern China on the border with Mongolia and Kazakhstan; the largest province in the People's Republic of China and the homeland of the Uighur people [syn: {Sink...

1: an autonomous province in far northwestern China on the border with Mongolia and Kazakhstan; the largest province in the People's Republic of China and the homeland of the Uighur people [syn: {Xinj...

1: type genus of the Xiphiidae [syn: {genus Xiphias}]

1: large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor...

1: comprising the common swordfishes [syn: {family Xiphiidae}]

{xiphisternum}

1: bulbous iris of western Mediterranean region having usually violet-purple flowers [syn: {Spanish iris}, {Iris xiphium}]

1: smallest of the three parts of the breastbone; articulates with the corpus sternum and the seventh rib

1: horseshoe crabs and extinct forms [syn: {order Xiphosura}]

1: large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail; a living fossil related to the wood louse [syn: {hors...

1: a branch of the Tai languages [syn: {Tai Lue}]

1: being one more than thirteen [syn: {fourteen}, {14}] n : the cardinal number that is the sum of thirteen and one [syn: {fourteen}, {14}]

1: being one more than eighteen [syn: {nineteen}, {19}] n : the cardinal number that is the sum of eighteen and one [syn: {nineteen}, {19}]

1: an Asian country under the control of China; located in the Himalayas [syn: {Tibet}, {Thibet}, {Sitsang}]

1: being ten more than thirty [syn: {forty}, {40}, {twoscore}] n : the cardinal number that is the product of ten and four [syn: {forty}, {40}]

1: being one more than forty [syn: {forty-one}, {41}]

1: being two more than forty [syn: {forty-two}, {42}]

1: being three more than forty [syn: {forty-three}, {43}]

1: being four more than forty [syn: {forty-four}, {44}]

1: being five more than forty [syn: {forty-five}, {45}]

1: being six more than forty [syn: {forty-six}, {46}]

1: being seven more than forty [syn: {forty-seven}, {47}]

1: being eight more than forty [syn: {forty-eight}, {48}]

1: a Christian holiday celebrating the birth of Christ; a quarter day in England, Wales, and Ireland [syn: {Christmas}, {Christmas Day}, {Dec 25}]

1: gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire [syn: {X-OR circuit}, {XOR gate}]

1: gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire [syn: {X-OR circuit}, {XOR circuit}]

1: the presence of an unwanted signal via an accidental coupling [syn: {crosstalk}]

1: street names for methylenedioxymethamphetamine [syn: {Adam}, {ecstasy}, {go}, {disco biscuit}, {cristal}, {X}, {hug drug}]

1: being one more than fourteen [syn: {fifteen}, {15}] n : the cardinal number that is the sum of fourteen and one [syn: {fifteen}, {15}]

1: being one more than fifteen [syn: {sixteen}, {16}] n : the cardinal number that is the sum of fifteen and one [syn: {sixteen}, {16}]

1: being one more than sixteen [syn: {seventeen}, {17}] n : the cardinal number that is the sum of sixteen and one [syn: {seventeen}, {17}]

1: being one more than seventeen [syn: {eighteen}, {18}] n : the cardinal number that is the sum of seventeen and one [syn: {eighteen}, {18}]

1: denoting a quantity consisting of 20 items or units [syn: {twenty}, {20}] n 1: the cardinal number that is the sum of nineteen and one [syn: {twenty}, {20}] 2: (genetics) normal complement of sex c...

1: being one more than twenty [syn: {twenty-one}, {21}] n : the cardinal number that is the sum of twenty and one [syn: {twenty-one}, {21}]

1: being two more than twenty [syn: {twenty-two}, {22}] n : the cardinal number that is the sum of twenty-one and one [syn: {twenty-two}, {22}]

1: being three more than twenty [syn: {twenty-three}, {23}] n : the cardinal number that is the sum of twenty-two and one [syn: {twenty-three}, {23}]

1: being four more than twenty [syn: {twenty-four}, {24}] n : the cardinal number that is the sum of twenty-three and one [syn: {twenty-four}, {24}, {two dozen}]

1: being nine more than twenty [syn: {twenty-nine}, {29}] n : the cardinal number that is the sum of twenty-eight and one [syn: {twenty-nine}, {29}]

1: being five more than twenty [syn: {twenty-five}, {25}] n : the cardinal number that is the sum of twenty-four and one [syn: {twenty-five}, {25}]

1: being six more than twenty [syn: {twenty-six}, {26}] n : the cardinal number that is the sum of twenty-five and one [syn: {twenty-six}, {26}]

1: being seven more than twenty [syn: {twenty-seven}, {27}] n : the cardinal number that is the sum of twenty-six and one [syn: {twenty-seven}, {27}]

1: being eight more than twenty [syn: {twenty-eight}, {28}] n : the cardinal number that is the sum of twenty-seven and one [syn: {twenty-eight}, {28}]

1: being ten more than twenty [syn: {thirty}, {30}] n 1: the cardinal number that is the product of ten and three [syn: {thirty}, {30}] 2: (genetics) abnormal complement of three X chromosomes in a fe...

1: being one more than thirty [syn: {thirty-one}, {31}]

1: being two more than thirty [syn: {thirty-two}, {32}]

1: being three more than thirty [syn: {thirty-three}, {33}]

1: being four more than thirty [syn: {thirty-four}, {34}]

1: being five more than thirty [syn: {thirty-five}, {35}]

1: being six more than thirty [syn: {thirty-six}, {36}]

1: being severn more than thirty [syn: {thirty-seven}, {37}]

1: being eight more than thirty [syn: {thirty-eight}, {38}]

1: (genetics) abnormal complement of sex hormones in a male resulting in Klinefelter's syndrome

1: syndrome in males that is characterized by small testes and long legs and enlarged breasts and reduced sperm production and mental retardation; a genetic defect in which an extra X chromosome (XXY)...

1: (genetics) normal complement of sex hormones in a male

1: type genus of Xylariaceae; fungi with perithecia in the upper part of erect black woody stromata [syn: {genus Xylaria}]

1: fungus causing black root rot in apples [syn: {black root rot fungus}]

1: the fruiting bodies of the fungi of the genus Xylaria [syn: {dead-man's-fingers}, {dead-men's-fingers}]

1: family of fungi characterized by dark brown to back spores [syn: {family Xylariaceae}]

1: the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels

1: a colorless flammable volatile liquid hydrocarbon used as a solvent [syn: {xylol}]

1: a local anesthetic (trade names Lidocaine and Xylocaine) used topically on the skin and mucous membranes [syn: {lidocaine}]

1: carpenter bees [syn: {genus Xylocopa}]

1: a colorless flammable volatile liquid hydrocarbon used as a solvent [syn: {xylene}]

1: small species of Australian trees or shrubs; grown for their fruit and flowers [syn: {genus Xylomelum}]

1: tree bearing pear-shaped fruit with a thick woody epicarp [syn: {native pear}, {woody pear}]

1: a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets [syn: {marimba}]

1: someone who plays a xylophone

1: tropical evergreen trees or shrubs; chiefly African [syn: {genus Xylopia}]

1: tropical west African evergreen tree bearing pungent aromatic seeds used as a condiment and in folk medicine [syn: {Guinea pepper}, {negro pepper}]

1: a sugar extracted from wood or straw; used in foods for diabetics [syn: {wood sugar}]

1: shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China [syn: {Xylosma congestum}]

1: shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China [syn: {xylosma}]

1: swordtails [syn: {genus Xyphophorus}]

1: freshwater fish of Central America having a long swordlike tail; popular aquarium fish [syn: {swordtail}, {helleri}, {topminnow}]

1: plants of tropical to temperate regions; usually in wet places [syn: {family Xyridaceae}, {yellow-eyed grass family}]

1: an order of monocotyledonous herbs [syn: {order Xyridales}, {Commelinales}, {order Commelinales}]

1: chiefly American marsh plants, having usually yellow flowers [syn: {genus Xyris}]

1: of Australia [syn: {tall yellow-eye}]

1: (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes