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nce of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts of different origin.

Pertaining to, or resembling, the acephalocysts.

Having the style spring from the base, instead of from the apex, as is the case in certain ovaries.

Pertaining to, or obtained from, the maple; as, aceric acid. Ure.

Destitute of tentacles, as certain mollusks.

Pertaining to a heap. [Obs.]

An acid pulp in certain fruits, as the pear. Grew.

Of a pertaining to vinegar; producing vinegar; producing vinegar; as, acetic fermentation.

An instrument for estimating the amount of acetic acid in vinegar or in any liquid containing acetic acid.

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

ing of three parts of carbon, six of hydrogen, and one of oxygen; pyroacetic spirit, -- obtained by the distillation of certain acetates, or by the destructive distillation of citric acid, starch, sugar, or gum, with quicklime.

Of or pertaining to acetone; as, acetonic bodies.

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.

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

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.

Not possessing a mantle; -- said of certain gastropods.