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A unit; a single point or spot on a card or die; the card or die so marked; as, the ace of diamonds.

The system of warfare . . . which had already converted immense tracts into one universal aceldama. De Quincey.

Not centered; without a center.

One of the Acephala.

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.

Same as Acephal.

A fabulous people reported by ancient writers to have heads.

One who acknowledges no head or superior. Dr. Gauden.

A larval entozoön in the form of a subglobular or oval vesicle, or hy datid, filled with fluid, sometimes found in the tissues of man and the lower animals; -- so called from the absence of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts o…

Pertaining to, or resembling, the acephalocysts.

Wanting the beginning. A false or acephalous structure of sentence. De Quincey.

A canal or trench for irrigating land. [Sp. Amer.]

A combination of aceric acid with a salifiable base.

Sour, bitter, and harsh to the taste, as unripe fruit; sharp and harsh.

To sour; to imbitter; to irritate.

Sour or severe.

Sourness and harshness. [Obs.] Bailey.

Harshness, bitterness, or severity; as, acerbity of temper, of language, of pain. Barrow.

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

Having the nature of chaff; chaffy.