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That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See Mollusca.

Belonging to the Acephala.

Failure of the due secretion of milk after childbirth.

Lacking milk to suckle with.

One of a series of compounds that may be regarded as ammonia in which a part of the hydrogen has been replaced by basic, and another part by acid, atoms or radicals.

An almond.

Akin to, or derived from, the almond.

Pertaining to, resembling, or made of, almonds.

Causing a diminution or a suppression of the secretion of milk.

Good against malaria.

Checking the flow of saliva.

See Appalachian.

Of or pertaining to a chain of mountains in the United States, commonly called the Allegheny mountains.

aled against; that may be removed to a higher tribunal for decision; as, the cause is appealable.

An appellant. [Obs.] Shak.

The division that includes man alone. R. Owen.

The adjutant bird.

A thorny shrub yielding a fragrant oil. Ecclus. xxiv. 15.

Of or pertaining to the astragalus.

Not furnished with shields or beds for the spores, as the thallus of certain lichens.