Ac"e*tol (?), n. [Acetic + - ol as in alcohol.] (Chem.) Methyl ketol; also, any of various homologues of the same.
||Ac`e*to*næ"mi*a, -ne"mi*a (&?;), n. [NL. See Acetone; Hæma-.] (Med.) A morbid condition characterized by the presence of acetone in the blood, as in diabetes.
||Ac`e*to*nu"ri*a (?), n. [NL. See Acetone; Urine.] (Med.) Excess of acetone in the urine, as in starvation or diabetes.
Ac`e*to*phe"none (?), n. [Acetic + phenyl + one.] (Chem.) A crystalline ketone, CH3COC6H5, which may be obtained by the dry distillation of a mixture of the calcium salts of acetic and benzoic acids. It is used as a hypnotic under the name of hypnone.
||A` che*val" (?). [F., lit., on horseback.] Astride; with a part on each side; -- used specif. in designating the position of an army with the wings separated by some line of demarcation, as a river or road.
A position à cheval on a river is not one which a general willingly assumes.
Swinton.
A*chro"ma*tous (?), a. [See Ahromatic.] Lacking, or deficient in, color; as, achromatous blood.
A*chro"mic (?), a. [Gr. &?; colorless; &?; priv. + &?; color.] Free from color; colorless; as, in Physiol. Chem., the achromic point of a starch solution acted upon by an amylolytic enzyme is the point at which it fails to give any color with iodine.
Ac"id proc"ess. (Iron Metal.) That variety of either the Bessemer or the open-hearth process in which the converter or hearth is lined with acid, that is, highly siliceous, material. Opposed to basic process.
Ac`o*nit"ic (?), a. (Chem.) Pert. to or designating a crystalline tribasic acid, &?;, obtained from aconite and other plants. It is a carboxyl derivative of itaconic acid.
Ac*tin"o*gram (?), n. [Gr. &?;, &?;, ray + -gram.] A record made by the actinograph.
||Ac`ti*no*my*co"sis (?), n. [NL.] (Med.) A chronic infectious disease of cattle and man due to the presence of Actinomyces bovis. It causes local suppurating tumors, esp. about the jaw. Called also lumpy jaw or big jaw. -- Ac`ti*no*my*cot"ic (#), a.
Ac*tin"o*phone (?), n. [Gr. &?;, &?;, ray + &?; voice.] (Physics) An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays.
Ac*tin`o*phon"ic (?), a. (Physics) Pertaining to, or causing the production of, sound by means of the actinic, or ultraviolet, rays; as, actinophonic phenomena.
Ac`u*tor"sion (?), n. [L. acus needle + torsion.] (Med.) The twisting of an artery with a needle to arrest hemorrhage.
A*cyc"lic (?), a. [Pref. a- not + cyclic.] Not cyclic; not disposed in cycles or whorls; as: (a) (Bot.) Of a flower, having its parts inserted spirally on the receptacle. (b) (Org. Chem.) Having an open-chain structure; aliphatic.
Ac"yl (?), n. [Acid + - yl.] (Org. Chem.) An acid radical, as acetyl, malonyl, or benzoyl.
Ad*dress", v. t. -- To address the ball (Golf), to take aim at the ball, adjusting the grip on the club, the attitude of the body, etc., to a convenient position.
Ad"e*noid (?), n. (Med.) A swelling produced by overgrowth of the adenoid tissue in the roof of the pharynx; -- usually in pl.
||Ad`e*no"ma (?), n.; L. pl. -mata (#). [NL.; adeno- + -oma.] (Med.) A benign tumor of a glandlike structure; morbid enlargement of a gland. -- Ad`e*nom"a*tous (&?;), a.
Ad"e*nop"a*thy (?), n. [Adeno- + Gr. &?; suffering, &?; to suffer.] (Med.) Disease of a gland.
||Ad"e*no*scle*ro"sis (?), n. [NL.; adeno- + sclerosis.] (Med.) The hardening of a gland.
A"den ul"cer (?). [So named after Aden, a seaport in Southern Arabia, where it occurs.] (Med.) A disease endemic in various parts of tropical Asia, due to a specific microörganism which produces chronic ulcers on the limbs. It is often fatal. Called also Cochin China ulcer, Persian ulcer, tropical ulcer, etc.
||A`dios" (?), interj. [Sp., fr. L. ad to + deus god. Cf. Adieu.] Adieu; farewell; good-by; -- chiefly used among Spanish-speaking people.
This word is often pronounced å*d"s, but the Spanish accent, though weak, is on the final syllable.
Ad`i*pog"e*nous (?), a. [See Adipose; -genous.] (Med.) Producing fat.
||Ad`i*pol"y*sis (?), n. [NL.; L. adeps, adipis, fat + Gr. &?; a loosing.] (Physiol.) The digestion of fats.
Ad`i*po*lyt"ic (?), a. [L. adeps, adipis, fat + Gr. &?; to loose.] (Chem.) Hydrolyzing fats; converting neutral fats into glycerin and free fatty acids, esp. by the action of an enzyme; as, adipolytic action.
||Ad`i*po"ma (?), n.; L. pl. -mata (#). [NL. See Adipose; -oma.] (Med.) A mass of fat found internally; also, a fatty tumor. -- Ad`i*pom"a*tous (&?;), a.
Ad"i*pose` (?), n. (Physiol.) The fat present in the cells of adipose tissue, composed mainly of varying mixtures of tripalmitin, tristearin, and triolein. It solidifies after death.
{ Adjusting plane or surface. } (Aëronautics) A small plane or surface, usually capable of adjustment but not of manipulation, for preserving lateral balance in an aëroplane or flying machine.
Ad*mit"tance, n. (Elec.) The reciprocal of impedance.
||A*do"be (?), n. 1. Earth from which unburnt bricks are made. [Western U. S.]
2. (Geol.) Alluvial and playa clays of desert and arid regions, differing from ordinary clays of humid regions in containing carbonates and other soluble minerals.
||Ad`o*na"i (?), n. [Heb. adni, lit., my lord.] A Hebrew name for God, usually translated in the Old Testament by the word "Lord".
The later Jews used its vowel points to fill out the tetragrammaton Yhvh, or Ihvh, "the incommunicable name," and in reading substituted "Adonai".
Ad*re"nal*ine (?), n. Also Ad*re"nal*in (&?;). (Physiol. Chem.) A crystalline substance, C9H13O3N, obtained from suprarenal extract, of which it is regarded as the active principle. It is used in medicine as a stimulant and hemostatic.
Ad*su"ki bean (?). [Jap. adzuki.] A cultivated variety of the Asiatic gram, now introduced into the United States.
Ad"u*rol (?), n. (Photog.) Either of two compounds, a chlorine derivative and bromine derivative, of hydroquinone, used as developers.
Ad*van"cing edge. (Aëronautics) The front edge (in direction of motion) of a supporting surface; -- contr. with following edge, which is the rear edge.
Ad*van"cing sur"face. (Aëronautics) The first of two or more surfaces arranged in tandem; -- contr. with following surface, which is the rear surface.
Æ*ol"ic, a. [L. Aeolus, Gr. &?;, name of the god of the winds.] (Phys. Geog.) Pertaining to, caused by, or designating, the action of the wind in modifying the earth's surface; as, æolic erosion; æolic sand. [Written also eolic.]
A"ër*a`tor (?), n. That which supplies with air or gas; specif.: (a) An apparatus used for charging mineral waters with gas and in making soda water. (b) A fumigator used to bleach grain, destroying fungi and insects.
{ A"ër*en`chym (?), ||A`ër*en"chy*ma (?) }, n. [NL. aërenchyma. See Aëro-; Enchyma.] (Bot.) A secondary respiratory tissue or modified periderm, found in many aquatic plants and distinguished by the large intercellular spaces.
A*ë`ri*al rail"way`. (a) A stretched wire or rope elevated above the ground and forming a way along which a trolley may travel, for conveying a load suspended from the trolley. (b) An elevated cableway.
A*ë"ri*al sick"ness. A sickness felt by aëronauts due to high speed of flights and rapidity in changing altitudes, combining some symptoms of mountain sickness and some of seasickness.