Webster's Dictionary 1913

919

Achromatic

Ach′ro‐mat″ic (�), a. [Gr. � colorless; ἀ priv. + �, �, color: cf. F. achromatique.] 1. (Opt.) Free from color; transmitting light without decomposing it into its primary colors...

920

Achromatically

Ach′ro‐mat″ic‐al‐ly (�), adv. In an achromatic manner.

921

Achromaticity

Ach′ro‐ma‐tic″i‐ty (�), n. Achromatism.

922

Achromatin

A‐chro″ma‐tin (�), n.(Biol.) Tissue which is not stained by fluid dyes. W. Flemming.

923

Achromatism

A‐chro″ma‐tism (�), n. [Cf. F. achromatisme.] The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. Nichol.

924

Achromatization

A‐chro′ma‐ti‐za″tion (�), n. [Cf. F. achromatisation.] The act or process of achromatizing.

925

Achromatize

A‐chro″ma‐tize (�), v. t. [imp. & p. p.Achromatized (�); p. pr. & vb. n.Achromatizing (�).] [Gr. ἀ priv. + � color.] To deprive of color; to make achromatic.

926

Achromatopsy

A‐chro″ma‐top″sy (�), n. [Gr. ἀ priv. + � color + � sight.] Color blindness; inability to distinguish colors; Daltonism.

927

Achromatous

A‐chro″ma‐tous (?), a. [See Ahromatic.] Lacking, or deficient in, color; as, achromatous blood.

928

Achromic

A‐chro″mic (?), a. 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 t...

929

Achronic

A‐chron″ic (�), a. See Acronyc.

930

Achroödextrin

Ach′ro‐ö‐dex″trin (�), n. [Gr. � colorless + E. dextrin.] (Physiol. Chem.) Dextrin not colorable by iodine. See Dextrin.

931

Achroous

Ach″ro‐ous (�), a. [Gr. �; ἀ priv. + � color.] Colorless; achromatic.

932

Achylous

A‐chy″lous (�), a.(Physiol.) Without chyle.

933

Achymous

A‐chy″mous (�), a.(Physiol.) Without chyme.

934

Acicula

‖A‐cic″u‐la (�), n.; pl.Aciculæ (�). [L., a small needle, dimin. of acus needle.] (Nat. Hist.) One of the needlelike or bristlelike spines or prickles of some animals and plants...

935

Acicular

A‐cic″u‐lar (�), a. Needle-shaped; slender like a needle or bristle, as some leaves or crystals; also, having sharp points like needles.A‐cic″u‐lar‐ly, adv..

936

Aciculate

{ A‐cic″u‐late (�), A‐cic″u‐la″ted (�) } a.(Nat. Hist.) (a) Furnished with aciculæ. (b) Acicular. (c) Marked with fine irregular streaks as if scratched by a needle. Lindley.

937

Aciculiform

A‐cic″u‐li‐form (�), a. [L. acicula needle + -form.] Needle-shaped; acicular.

938

Aciculite

A‐cic″u‐lite (�), n.(Min.) Needle ore. Brande & C.

939

Acid

Ac″id (�), a. [L. acidus sour, fr. the root ak to be sharp: cf. F. acide. Cf. Acute.] 1. Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits ...

940

Acid (2)

Ac″id, n. 1. A sour substance.2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable...

941

Acid process

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, mate...

942

Acidic

A‐cid″ic (�), a.(Min.) Containing a high percentage of silica; — opposed to basic.

943

Acidiferous

Ac′id‐if″er‐ous (�), a. [L. acidus sour + -ferous.] Containing or yielding an acid.

944

Acidifiable

A‐cid″i‐fi′a‐ble (�), a. Capable of being acidified, or converted into an acid.

945

Acidific

Ac′id‐if″ic (�), a. Producing acidity; converting into an acid. Dana.