adj. 1. 1 growing well in an acid medium; said of some bacteria
Syn. -- aciduric [ WordNet 1.5 ]

n. 1. abnormally high acidity of the blood and other body fluids. [ WordNet 1.5 ]

adj. 1. of or pertaining to acidosis; suffering from acidosis. [ WordNet 1.5 ]

n. 1. 1 a genus of birds comprising the mynas.
Syn. -- genus Acridotheres. [ WordNet 1.5 ]

a. [ Gr. 'a priv. + &unr_;, &unr_;, a scale. ] (Zool.) Not having scales. -- n. A fish without scales. [ 1913 Webster ]

a. [ From Amide. ] (Chem.) Containing, or derived from, amidogen. [ 1913 Webster ]

Amido acid, an acid in which a portion of the nonacid hydrogen has been replaced by the amido group. The amido acids are both basic and acid. --
Amido group, amidogen, NH2. [ 1913 Webster ]

n. [ Amide + -gen. ] (Chem.) A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido. [ 1913 Webster ]

n. [ Amide + -ol as in alcohol. ] (Photog. & Chem.) A salt of a diamino phenol, C6H3(OH)(NH2)2, used as a developer. [ Webster 1913 Suppl. ]

n. (Med.) A disorder characterized by deposit of extracellular amyloid{ 2 } in organs or tissues in an amount that interferes with normal function of the affected organ; it is often secondary to chronic rheumatoid arthritis or tuberculosis or multiple myeloma. Called also amyloid degeneration waxy degeneration and lardaceous degeneration. [ WordNet 1.5 + AS ]

a. (Zool.) Of the nature of an annelid. [ 1913 Webster ]

prop. n. A genus of mammals comprising the springbucks (or springboks). The main species is Antidorcas marsupialis the springbuck, of which there are three subspecies: the cape springbuck (marsupialis), the Kalahari springbuck (hofmeyri) and the Angolan springbuck (angolensis).
Syn. -- genus Antidorcas. [ WordNet 1.5 +PJC ]

#) a. Having the quality an antidote; fitted to counteract the effects of poison. Sir T. Browne. -- An"ti*do`tal*ly, adv. [1913 Webster]

a. Antidotal. -- n. An antidote; also, a book of antidotes. [ 1913 Webster ]

n. [ L. antidotum, Gr. 'anti`doton (sc. fa`rmakon), fr. 'anti`dotos given against; 'anti` against + dido`nai to give: cf. F. antidote. See Dose, n. ] 1. A remedy to counteract the effects of poison, or of anything noxious taken into the stomach; -- used with against, for, or to; as, an antidote against, for, or to, poison. [ 1913 Webster ]

2. Whatever tends to prevent mischievous effects, or to counteract evil which something else might produce. [ 1913 Webster ]

v. t. 1. To counteract or prevent the effects of, by giving or taking an antidote. [ 1913 Webster ]

Nor could Alexander himself . . . antidote . . . the poisonous draught, when it had once got into his veins. South. [ 1913 Webster ]

2. To fortify or preserve by an antidote. [ 1913 Webster ]

a. Serving as an antidote. -- An`ti*dot"ic*al*ly, adv. [1913 Webster]

a. [ Aphis + Gr. &unr_; to eat. ] (Zool.) Feeding upon aphides, or plant lice, as do beetles of the family Coccinellidæ. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_;, &unr_;, shield + &unr_; gills. ] (Zool.) A group of Gastropoda, with limpetlike shells, including the abalone shells and keyhole limpets. [ 1913 Webster ]

n. 1. 1 a genus comprising the alligatorfishes.
Syn. -- genus Aspidophoroides. [ WordNet 1.5 ]

n. [ Gr. &unr_;, &unr_;, smoke, vapor + -meter; cf. F. atmidomètre. ] An instrument for measuring the evaporation from water, ice, or snow. Brande & C. [ 1913 Webster ]

adj. relating to or containing the azido group -N3. [ WordNet 1.5 ]

n. 1. 1 an antiviral drug, (C10H13N5O4) used in the treatment of AIDS. It has the generic name of zidovudine. an analog of thymidine, it inhibits the replication of the viral chromosome.
Syn. -- AZT, zidovudine[ generic ], 3'-azido 3'-deoxythymidine, Retrovir[ Trademark ] [ WordNet 1.5 +PJC ]

n. [ F. bridon, from bride; of German origin. See Bridle, n. ] (Mil.) The snaffle and rein of a military bridle, which acts independently of the bit, at the pleasure of the rider. It is used in connection with a curb bit, which has its own rein. Campbell. [ 1913 Webster ]

‖n. [ Jap. bu military + shi knight + dō way, doctrine, principle. ] The unwritten code of moral principles regulating the actions of the Japanese knighthood, or Samurai; the chivalry of Japan. [ 1913 Webster ]

Unformulated, Bushido was and still is the animating spirit, the motor force of our country. Inazo Nitobé. [ Webster 1913 Suppl. ]

n. [ Cf. LL. cassidonium, F. cassidoine. See Chalcedony. ] (Bot.) (a) The French lavender (Lavandula Stœchas). (b) The goldilocks (Chrysocoma Linosyris) and perhaps other plants related to the genus Gnaphalium or cudweed. [ 1913 Webster ]

‖prop. n. [ Nl., fr. Gr. khki`s, khki^dos, a gall nut + myi^a a fly. ] (Zool.) A genus of small dipterous files, including several very injurious species, as the Hessian fly. See Hessian fly. [ 1913 Webster ]

prop. n. A natural family comprising the gall midges.
Syn. -- family Cecidomyidae. [ WordNet 1.5 ]

n. [ Gr. &unr_;, &unr_; stain, spot + -graphy: cf. F. célidographie. ] A description of apparent spots on the disk of the sun, or on planets. [ 1913 Webster ]

a. [ L. centifidus; centum + findere to split. ] Divided into a hundred parts. [ 1913 Webster ]

n. [ NL., fr. Gr. chelidw`n. ] (Anat.) The hollow at the flexure of the arm. [ 1913 Webster ]

a. [ See Celandine. ] (Chem.) Of, pertaining to, or derived from, the celandine. [ 1913 Webster ]

Chelidonic acid, a weak acid extracted from the celandine (Chelidonium majus), as a white crystalline substance. [ 1913 Webster ]

n. a genu having only one species; the greater celandine.
Syn. -- genus Chelidonium. [ WordNet 1.5 ]

‖n. [ L. (sc. lapillus.) ] A small stone taken from the gizzard of a young swallow. -- anciently worn as a medicinal charm. [ 1913 Webster ]

n. (Zool.) A large whippoorwill-like bird (a species of goatsucker) (Caprimulgus carolinensis, formerly Antrostomus Carolinensis), of the southern United States; -- so called from its note. [ 1913 Webster ]

n. [ Cnida + -blast. ] (Zool.) One of the cells which, in the Cœlenterata, develop into cnidæ. [ 1913 Webster ]

n. [ Cnida + cilium eyelash. ] (Zool.) The fine filiform process of a cnidoblast. [ 1913 Webster ]

n. a disease of the lungs and skin characterized by excessive sputum and nodules. [ WordNet 1.5 ]

‖n. [ Sp., orig., a corrector. ] The chief magistrate of a Spanish town. [ 1913 Webster ]

n. [ F., fr. Itt. corridpore, or Sp. corredor; prop., a runner, hence, a running or long line, a gallery, fr. L. currere to run. See Course. ] [ 1913 Webster ]

1. (Arch.) A gallery or passageway leading to several apartments of a house. [ 1913 Webster ]

2. (Fort.) The covered way lying round the whole compass of the fortifications of a place. [ R. ] [ 1913 Webster ]

3. any relatively narrow passageway or route, such as a strip of land through a foreign territory. [ PJC ]

4. a densely populated stretch of land; as, the Northeast corridor, extending from Richmond, Virginia into Maine. [ PJC ]

. A train whose coaches are connected so as to have through its entire length a continuous corridor, into which the compartments open. [ Eng. ] [ Webster 1913 Suppl. ]

n. [ Gr. kroky`s nap on cloth + -lite. ] (Min.) A mineral occuring in silky fibers of a lavender blue color. It is related to hornblende and is essentially a silicate of iron and soda; -- called also blue asbestus. A silicified form, in which the fibers penetrating quartz are changed to oxide of iron, is the yellow brown tiger-eye of the jewelers. [ 1913 Webster ]

a. (Zool.) Pertaining to the Curculionideæ, or weevil tribe. [ 1913 Webster ]

n. [ Pg. cuspideria, fr. cuspir to spit. ] Any ornamental vessel used as a spittoon; hence, to avoid the common term, a spittoon of any sort. [ 1913 Webster ]

a. (Chem.) A prefix or combining form of Diamine. [ Also used adjectively. ] [ 1913 Webster ]

n.; pl. Didos A shrewd trick; an antic; a caper. [ 1913 Webster ]

To cut a dido, to play a trick; to cut a caper; -- perhaps so called from the trick of Dido, who having bought so much land as a hide would cover, is said to have cut it into thin strips long enough to inclose a spot for a citadel. [ 1913 Webster ]

‖n. [ NL. So called in allusion to the classical story of Dido and the bull's hide. ] (Geom.) The curve which on a given surface and with a given perimeter contains the greatest area. Tait.

n. [ Gr. &unr_; double + &unr_; image + -scope. ] (Astron.) An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass disposed in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's center is on the meridian. [ 1913 Webster ]

n. [ Gr. e'i^dos form + graph. ] An instrument for copying drawings on the same or a different scale; a form of the pantograph. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; image. See Idol. ] An image or representation; a form; a phantom; an apparition. Sir W. Scott. [ 1913 Webster ]

n. [ Gr. &unr_; to give besides; &unr_; over + &unr_; to give: cf. F. épidote. So named from the enlargement of the base of the primary, in some of the secondary forms. ] (Min.) A mineral, commonly of a yellowish green (pistachio) color, occurring granular, massive, columnar, and in monoclinic crystals. It is a silicate of alumina, lime, and oxide of iron, or manganese. [ 1913 Webster ]

☞ The Epidote group includes ordinary epidote, zoisite or lime epidote, piedmontite or manganese epidote, allanite or cerium epidote. [ 1913 Webster ]