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The act or method of ascertaining the strength of vinegar, or the proportion of acetic acid contained in it. Ure.

Of or pertaining to acetone; as, acetonic bodies.

Of or pertaining to Achaia in Greece; also, Grecian. -- n.

Purchase; bargaining. [Obs.] Chaucer.

A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists. [Written also akene and achænium.]

Pertaining to an achene.

Of or pertaining to Acheron; infernal; hence, dismal, gloomy; moribund.

To obtain, or gain, as the result of exertion; to succeed in gaining; to win. Some are born great, some achieve greatness. Shak. Thou hast achieved our liberty. Milton.

The act of achieving or performing; an obtaining by exertion; successful performance; accomplishment; as, the achievement of his object.

Of or pertaining to an acid; as, acid reaction.

Containing a high percentage of silica; -- opposed to basic. an acidic solution.

Containing or yielding an acid.

An instrument for ascertaining the strength of acids. Ure.

Containing seeds or stones of grapes, or grains like them.

The act of acknowledging; admission; avowal; owning; confession. "An acknowledgment of fault." Froude.

Pertaining to acnodes.

Pertaining to acology.

Of or pertaining to aconite.

Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. Acoustic duct, the auditory duct, or external passage of the ear. -- Acoustic telegraph, a telegraph making audible signals; a telephone. -- Acoustic vessels, brazen tubes or vessels, shaped like a bell, used in ancient the…

Of or pertaining to acoustics.