*ata*

‖n. pl. [ NL., from Gr. 'a priv. + &unr_;, pl., the gills of fishes. ] (Zool.) A group of annelids, so called because the species composing it have no special organs of respiration. [ 1913 Webster ]

a. [ L. acatalecticus, Gr. &unr_;, not defective at the end; 'a priv. + &unr_; to cease. ] (Pros.) Not defective; complete; as, an acatalectic verse. -- n. A verse which has the complete number of feet and syllables. [ 1913 Webster ]

n. [ Gr. &unr_;; 'a priv. + &unr_; to seize, comprehend. ] Incomprehensibility of things; the doctrine held by the ancient Skeptic philosophers, that human knowledge never amounts to certainty, but only to probability. [ 1913 Webster ]

a. [ Gr. &unr_;. ] Incapable of being comprehended; incomprehensible. [ 1913 Webster ]

a. Capable of being acclimated. [ 1913 Webster ]

n. [ Cf. F. acclimation. See Acclimate. ] Acclimatization. [ 1913 Webster ]

n. Aftergrass. [ 1913 Webster ]

‖n. [ L. albatus, p. p. of albare to make white, fr. albus white. ] A white metallic alloy; which is made into spoons, forks, teapots, etc. British plate or German silver. See German silver, under German. [ 1913 Webster ]

adj. 1. capable of being allocated.
Syn. -- allocable, apportionable. [ WordNet 1.5 ]

‖n. pl. [ NL. ] (Zool.) See Annelida. [ 1913 Webster ]

‖n. pl. [ Neut. pl., fr. L. annulatus ringed. ] (Zool.) A class of articulate animals, nearly equivalent to Annelida, including the marine annelids, earthworms, Gephyrea, Gymnotoma, leeches, etc. See Annelida. [ 1913 Webster ]

a. Before birth. Shelley. [ 1913 Webster ]

a. (Med.) Efficacious against catarrh. -- n. An anticatarrhal remedy. [ 1913 Webster ]

n. (Eccl.) One of a sect which opposes the observance of the Christian Sabbath. [ 1913 Webster ]

‖ n. pl. [ Pref. a- not + placenta. ] (Zool.) Mammals which have no placenta. [ 1913 Webster ]

‖n. pl. [ NL. ] (Zool.) An order of annelids; the Polychæta. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'a`rqron joint + &unr_; lid. ] (Zool.) One of the orders of Branchiopoda. See Branchiopoda. [ 1913 Webster ]

‖n. pl. [ Neut. pl. from L. articulatus furnished with joints, distinct, p. p. of articulare. See Article, v. ] (Zool.) 1. One of the four subkingdoms in the classification of Cuvier. It has been much modified by later writers. [ 1913 Webster ]

☞ It includes those Invertebrata having the body composed of a series of ringlike segments (arthromeres). By some writers, the unsegmented worms (helminths) have also been included; by others it is restricted to the Arthropoda. It corresponds nearly with the Annulosa of some authors. The chief subdivisions are Arthropoda (Insects, Myriapoda, Malacopoda, Arachnida, Pycnogonida, Crustacea); and Anarthropoda, including the Annelida and allied forms. [ 1913 Webster ]

2. One of the subdivisions of the Brachiopoda, including those that have the shells united by a hinge. [ 1913 Webster ]

3. A subdivision of the Crinoidea. [ 1913 Webster ]

{ ‖‖‖ } n. pl. [ NL., fr. Gr. 'a priv. + &unr_; a tube. ] (Zool.) A group of bivalve mollusks destitute of siphons, as the oyster; the asiphonate mollusks. [ 1913 Webster ]

n. [ Sp. atabal, fr. Ar. at-tabl the drum, tabala to beat the drum. Cf. Tymbal. ] A kettledrum; a kind of tabor, used by the Moors. Croly. [ 1913 Webster ]

n. [ Trademark. ] a drug once used to treat malaria (C23H30ClN3O); chemically it is a derivative of the tricyclic structure acridine: 6-chloro-9-[ [ 4-(diethylamino-1-methylbutyl) ]amino ]-2-methoxyacridine. It also has some anthelmintic activity against cestodes. Atabrine is a trademark.
Syn. -- quinacrine, mepacrine. [ WordNet 1.5 ]

n. [ From the desert of Atacama, where found. ] (Min.) An oxychloride of copper, usually in emerald-green prismatic crystals. [ 1913 Webster ]

prep. After. [ Obs. ] Chaucer. [ 1913 Webster ]

n. See Yataghan. [ 1913 Webster ]

v. t. To overtake. [ Obs. ] Chaucer. [ 1913 Webster ]

n. [ Russ. ataman': cf. Pol. hetman, G. hauptmann headman, chieftain. Cf. Hetman. ] A hetman, or chief of the Cossacks. [ 1913 Webster ]

[ Atamasco is fr. North American Indian. ] (Bot.) See under Lily. [ Webster 1913 Suppl. ]

n. 1. essential oil or perfume obtained from flowers.
Syn. -- attar, athar, ottar [ WordNet 1.5 ]

n. 1. 1 drug that reduces nervous tension and gives peace of mind.
Syn. -- ataraxic [ WordNet 1.5 ]

adj. 1. tending to soothe or calm or tranquilize
Syn. -- calming, sedative, soothing, tranquilizing [ WordNet 1.5 ]

n. 1. drug that reduces nervous tension and gives peace of mind.
Syn. -- ataractic [ WordNet 1.5 ]

{ ‖ } n. [ NL. ataraxia, Gr. 'ataraxi`a; 'a priv. + tarakto`s disturbed, tara`ssein to disturb. ] Perfect peace of mind, or calmness. [ 1913 Webster ]

{ } adv. [ F. autant as much (as possible). ] (Naut.) Fully rigged, as a vessel; with all sails set; set on end or set right. [ 1913 Webster ]

a. [ Cf. F. atavique. ] Pertaining to a remote ancestor, or to atavism. [ 1913 Webster ]

n. [ L. atavus an ancestor, fr. avus a grandfather. ] 1. (a) The recurrence, or a tendency to a recurrence, of the original type of a species in the progeny of its varieties; resemblance to remote rather than to near ancestors; reversion to the original form. (b) (Biol.) The recurrence of any peculiarity or disease of an ancestor in a subsequent generation, after an intermission for a generation or two. [ 1913 Webster ]

Now and then there occur cases of what physiologists call atavism, or reversion to an ancestral type of character. J. Fiske [ 1913 Webster ]

2. recurrence of or reversion to a past style, outlook, approach, or manner. [ PJC ]

adj. 1. 1 displaying characteristics of a previous cultural era or of a previous ancestral form; displaying atavism
Syn. -- atavic, throwback(prenominal) [ WordNet 1.5 ]

a. [ Cf. F. ataxique. See Ataxia. ] (Med.) Characterized by ataxy, that is, (a) by great irregularity of functions or symptoms, or (b) by a lack of coordinating power in movements. [ 1913 Webster ]

Ataxic fever, malignant typhus fever. Pinel. [ 1913 Webster ]

{ ‖ } n. [ NL. ataxia, Gr. &unr_;, fr. &unr_; out of order; 'a priv. + &unr_; ordered, arranged, &unr_; to put in order: cf. F. ataxie. ] 1. Disorder; irregularity. [ Obs. ] Bp. Hall. [ 1913 Webster ]

2. (Med.) (a) Irregularity in disease, or in the functions. (b) The state of disorder that characterizes nervous fevers and the nervous condition. [ archaic ] [ 1913 Webster ]

3. (Med.) Loss of coordination in the voluntary muscles, especially the limbs; an inability to coordinate voluntary muscle movements; it results in unsteady movements and a staggering gait. See also locomotor ataxia, an ataxia which occurs when attempting to perform coordinated muscular movements.
Syn. -- ataxy [ WordNet 1.5 +PJC ]

Locomotor ataxia. See Locomotor. [ 1913 Webster ]

n. [ OF., fr. Ar. al-tasīr influence. ] (Astron.) The influence of a star upon other stars or upon men. [ Obs. ] Chaucer. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'a priv. + &unr_; chest, box. ] (Zool.) A division of Hydroidea in which the zooids are naked, or not inclosed in a capsule. See Tubularian. [ 1913 Webster ]

n. [ Auto- + catalysis. ] (Chem.) Self-catalysis; catalysis of a substance by one of its own products, as of silver oxide by the silver formed by reduction of a small portion of it. -- Au`to*cat`a*lyt"ic a. [Webster 1913 Suppl.]

n. [ Skr. avatâra descent; ava from + root t&rsdot_; to cross, pass over. ] 1. (Hindu Myth.) The descent of a deity to earth, and his incarnation as a man or an animal; -- chiefly associated with the incarnations of Vishnu. [ 1913 Webster ]

2. An incarnation, embodiment or personification of a principle, quality, or attitude; -- used of people, mostly in a positive sense as a manifestation of a behavior or character worthy of admiration. [ 1913 Webster +PJC ]

Martha Stewart, the home-and-hearth avatar whose products are now available at Kmart stores, is making upscale design touches like 200-thread-count cotton bed sheets something that most every American can aspire to. Leslie Kaufman (N. Y. Times, May 7, 1999). [ 1913 Webster ]

n. [ Sp., prob. fr. native name. ] 1. A West Indian sapotaceous tree (Bumelia retusa). [ Webster 1913 Suppl. ]

2. The bully tree (Minusops globosa); also, its milky juice (
balata gum), which when dried constitutes an elastic gum called chicle, or chicle gum. [ Webster 1913 Suppl. ]

a. [ Abbrev. from debatable. ] Disputable. [ Obs. ] [ 1913 Webster ]

☞ The border land between England and Scotland, being formerly a subject of contention, was called batable or debatable ground. [ 1913 Webster ]

a. Embattled. [ Obs. ] Chaucer. [ 1913 Webster ]

‖n. [ F. ] 1. A cofferdam. Brande & C. [ 1913 Webster ]

2. (Mil.) A wall built across the ditch of a fortification, with a sluice gate to regulate the height of water in the ditch on both sides of the wall. [ 1913 Webster ]

{ ‖‖ } n. An aboriginal American name for the sweet potato (Ipomæa batatas). [ 1913 Webster ]

a. 1. Of or pertaining to the Batavi, an ancient Germanic tribe. [ 1913 Webster ]

2. Of or pertaining to Batavia or Holland; as, a Batavian legion. [ 1913 Webster ]

Batavian Republic, the name given to Holland by the French after its conquest in 1795. [ 1913 Webster ]