Acetous acid, a name formerly given to vinegar.
Ac"e*tyl (&?;), n. [L. acetum vinegar + Gr. &?; substance. See -yl.] (Chem.) A complex, hypothetical radical, composed of two parts of carbon to three of hydrogen and one of oxygen. Its hydroxide is acetic acid.
A*cet"y*lene (&?;), n. (Chem.) A gaseous compound of carbon and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a peculiar, unpleasant odor, and is produced for use as an illuminating gas in a number of ways, but chiefly by the action of water on calcium carbide. Its light is very brilliant. Watts.
{ Ach, Ache } (&?;), n. [F. ache, L. apium parsley.] A name given to several species of plants; as, smallage, wild celery, parsley. [Obs.] Holland.
{ A*chæ"an (&?;), A*cha"ian (&?;) } a. [L. Achaeus, Achaius; Gr. &?;.] Of or pertaining to Achaia in Greece; also, Grecian. -- n. A native of Achaia; a Greek.
||A*char"ne*ment (&?;), n. [F.] Savage fierceness; ferocity.
Ach"ate (&?;), n. An agate. [Obs.] Evelyn.
A*chate" (&?;), n. [F. achat purchase. See Cates.] 1. Purchase; bargaining. [Obs.] Chaucer.