n. (Zool.) The European siskin (Carduelis spinus), a small green and yellow finch, related to the goldfinch. [ 1913 Webster ]

{ } n. [ See Abietene. ] (Chem.) A resinous obtained from Strasburg turpentine or Canada balsam. It is without taste or smell, is insoluble in water, but soluble in alcohol (especially at the boiling point), in strong acetic acid, and in ether. Watts. [ 1913 Webster ]

n. pl. [ L. Aborigines; ab + origo, especially the first inhabitants of Latium, those who originally (ab origine) inhabited Latium or Italy. See Origin. ] 1. The earliest known inhabitants of a country; native races. [ 1913 Webster ]

2. The original fauna and flora of a geographical area [ 1913 Webster ]

n. One who abstains; esp., one who abstains from the use of intoxicating liquors. [ 1913 Webster ]

n. [ F. abstinence, L. abstinentia, fr. abstinere. See Abstain. ] 1. The act or practice of abstaining; voluntary forbearance of any action, especially the refraining from an indulgence of appetite, or from customary gratifications of animal or sensual propensities. Specifically, the practice of abstaining from intoxicating beverages, -- called also total abstinence. [ 1913 Webster ]

The abstinence from a present pleasure that offers itself is a pain, nay, oftentimes, a very great one. Locke. [ 1913 Webster ]

2. The practice of self-denial by depriving one's self of certain kinds of food or drink, especially of meat. [ 1913 Webster ]

Penance, fasts, and abstinence,
To punish bodies for the soul's offense. Dryden. [ 1913 Webster ]

n. Abstinence. [ R. ] [ 1913 Webster ]

a. [ F. abstinent, L. abstinens, p. pr. of abstinere. See Abstain. ] Refraining from indulgence, especially from the indulgence of appetite; abstemious; continent; temperate. Beau. & Fl. [ 1913 Webster ]

n. 1. One who abstains. [ 1913 Webster ]

2. (Eccl. Hist.) One of a sect who appeared in France and Spain in the 3d century. [ 1913 Webster ]

adv. With abstinence. [ 1913 Webster ]

n. Gum arabic. [ 1913 Webster ]

a. [ Gr. 'a priv. + &unr_; calyx. ] (Bot.) Without a calyx, or outer floral envelope. [ 1913 Webster ]

a. [ L. acanthinus, Gr. &unr_;, thorny, fr. &unr_;. See Acanthus. ] Of, pertaining to, or resembling, the plant acanthus. [ 1913 Webster ]

a. (Med.) Of or caused by acari (acarids, or mites); as, acarine diseases. [ 1913 Webster + AS ]

n. (Med.) A member of the order Acarina. [ PJC ]

a. [ Pref. a- not + cauline. ] (Bot.) Same as Acaulescent. [ 1913 Webster ]

n. The state of being accessary. [ 1913 Webster ]

n. The state of being accessory, or connected subordinately. [ 1913 Webster ]

a. [ Cf. F. accipitrin. ] (Zool.) Like or belonging to the Accipitres; raptorial; hawklike. [ 1913 Webster ]

a. Resembling little heaps. [ 1913 Webster ]

n. 1. a neurotransmitter released by the transmitting dendron at autononmous synapses and at neuromuscular junctions. It is a quaternary amine with an obligatory negative counterion. The nominal formula for the hydroxide form is C7H17NO3. Structural formula (CH3)3N(+)CH2CH2.O.CO.CH3.OH(-). Acetylcholine is the first recognized and best-studied of the neurotransmitters. At receptors it is recycled into choline by the action of acetylcholinesterase. Acetylcholinesterase inhibitors therefore function as nerve poisons. For biochemical studies it is prepared typically in the chloride or bromide forms. [ WordNet 1.5 +PJC ]

n. 1. an enzyme which exists in nerve cells and hydrolyses acetylcholine into choline and acetic acid. It is essential for neurotransmission at autonomous synapses and neuromuscular junctions, and its inhibition by acetylcholinesterase inhibitors can paralyze or kill an animal.
Syn. -- ACE [ PJC ]

‖n. (Med.) Same as Akinesia. AS [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'akinhtos immovable. ] (Zool.) A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria. [ 1913 Webster ]

a. [ Acinetæ + -form. ] (Zool.) Resembling the Acinetæ. [ 1913 Webster ]

n. [ From the name of the plant. ] (Chem.) An organic base, in the form of a white powder, obtained from Aconitum lycoctonum. Eng. Cyc. [ 1913 Webster ]

n. (Chem.) An intensely poisonous alkaloid, extracted from aconite. [ 1913 Webster ]

a. [ L. adamantinus, Gr. &unr_;. ] 1. Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains. [ 1913 Webster ]

2. (Min.) Like the diamond in hardness or luster. [ 1913 Webster ]

{ } a. Dull-witted; stupid. “The addle-brained Oberstein.” Motley. [ 1913 Webster ]

Dull and addle-pated. Dryden. [ 1913 Webster ]

‖ [ L., to the man. ] A phrase applied to an appeal or argument addressed to the principles, interests, or passions of a man. [ 1913 Webster ]

n. Also /mhw>. (Physiol. Chem.) a hormone secreted by the adrenal medulla that acts as a powerful stimulant in reponse to fear or stress; it stimulates autonomic nerve action. It can be obtained as a crystalline substance, C9H13NO3. It is used in medicine as a vasoconstrictor (hemostatic) and cardiac stimulant, also to reduce allergic reactions and to stimulate the heart in cases of cardiac arrest. MI11
Syn. -- epinephrine; 3, 4-dihydroxy-1-[ 1-hydroxy-2-(methylamino)-ethyl ]benzene. [ Webster 1913 Suppl. +PJC ]

n. 1. .
Syn. -- epinephrine, adrenalin [ WordNet 1.5 ]

a. [ L. adulterinus, fr. adulter. ] Proceeding from adulterous intercourse. Hence: Spurious; without the support of law; illegal. [ 1913 Webster ]

When any particular class of artificers or traders thought proper to act as a corporation without a charter, such were called adulterine guilds. Adam Smith. [ 1913 Webster ]

n. An illegitimate child. [ R. ] [ 1913 Webster ]

(Chem.) Same as Ethiops mineral. [ Obs. ] [ 1913 Webster ]

v. t. [ F. affiner to refine; &unr_; (L. ad) + fin fine. See Fine. ] To refine. [ Obs. ] Holland. [ 1913 Webster ]

a. [ OF. afiné related, p. p., fr. LL. affinare to join, fr. L. affinis neighboring, related to; ad + finis boundary, limit. ] Joined in affinity or by any tie. [ Obs. ] “All affined and kin.” Shak. [ 1913 Webster ]

a. Pertaining to, or like, agate. [ 1913 Webster ]

An engine driven by heated or by compressed air. Knight. [ 1913 Webster ]

n. 1. The state or quality of being airy; openness or exposure to the air; as, the airiness of a country seat. [ 1913 Webster ]

2. Lightness of spirits; gayety; levity; as, the airiness of young persons. [ 1913 Webster ]

. an organization, usually commercial or governmental, providing transportation by airplane for freight or passengers. The term includes the organization, its personnel, equipment and other properties, such as approved air routes. [ PJC. ]

. A path through the air made easy for aërial navigation by steady winds. [ Webster 1913 Suppl. ]

n. 1. fitness to fly. “the plane received a certificate of airworthiness”. [ WordNet 1.5 ]

‖n. [ Gr. 'akinhsi`a quiescence; 'a priv. + ki`nhsis motion. ] (Med.) Loss of the ability for voluntary muscle movement. Foster. [ 1913 Webster + AS ]

‖/mhw>, a. (Med.) Of or pertaining to akinesia. [ 1913 Webster + AS ]

a. Of, pertaining to, or like, alabaster; as alabastrine limbs. [ 1913 Webster ]

n. [ Aldehyde + the ending -ine. The -n- is a euphonic insertion. ] (Chem.) one of the natural amino acids found combined in the proteins of most living tissues. It can be isolated as a white crystalline base, C3H7NO2. The natural form is the L-configuration. [ 1913 Webster +PJC ]

n. A female albino. Holmes. [ 1913 Webster ]

a. [ See Albugo. ] Of the nature of, or resembling, the white of the eye, or of an egg; albuminous; -- a term applied to textures, humors, etc., which are perfectly white. [ 1913 Webster ]

n. [ NL., fr. E. albumin. ] (Med.) The level of albumin in the blood. [ Webster 1913 Suppl. + AS ]

a. (Bibliog.) An epithet applied to editions (chiefly of the classics) which proceeded from the press of Aldus Manitius, and his family, of Venice, for the most part in the 16th century and known by the sign of the anchor and the dolphin. The term has also been applied to certain elegant editions of English works. [ 1913 Webster ]