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defect; exact; as, an accurate calculator; an accurate measure; accurate expression, knowledge, etc.

lem, purchased with the bribe which Judas took for betraying his Master, and therefore called the field of blood. Fig.: A field of bloodshed. The system of warfare . . . which had already converted immense tracts into one universal aceldama. De Quincey.

n 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.

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…

A compound of aniline with acetyl, used to allay fever or pain; -- called also antifebrine.

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.]

An escutcheon or ensign armorial; now generally applied to the funeral shield commonly called hatchment. Cussans.

the large muscles in the calf of the leg, an inserted into the bone of the heel; -- so called from the mythological account of Achilles being held by the heel when dipped in the River Styx.

mes from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.

To acknowledge; to confess. [Obs.] Chaucer. To be acknown (often with of or on), to acknowledge; to confess. [Obs.] We say of a stubborn body that standeth still in the denying of his fault, This man will not acknowledge his fault, or, He will not be acknown of his fault. Sir T. More.

Anciently, a snake, called dart snake; now, one of a genus of reptiles closely allied to the lizards.

Fed or filled with acorns. [R.] Shak.

To furnish or give experimental knowledge of; to make (one) to know; to make familiar; -- followed by with. Before a man can speak on any subject, it is necessary to be acquainted with it. Locke. A man of sorrows and acquainted with grief. Isa. liii. 3.

state of being acquainted, or of having intimate, or more than slight or superficial, knowledge; personal knowledge gained by intercourse short of that of friendship or intimacy; as, I know the man; but have no acquaintance with him. Contract no friendship, or even acquaintance, with a guileful man. Sir W. Jones.…

r by omitting to object; -- followed by in, formerly also by with and to. They were compelled to acquiesce in a government which they did not regard as just. De Quincey.

usually by one's own exertions; to get as one's own; as, to acquire a title, riches, knowledge, skill, good or bad habits. No virtue is acquired in an instant, but step by step. Barrow. Descent is the title whereby a man, on the death of his ancestor, acquires his estate, by right of representation, as his heir at law…

ut at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form.

, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.].

A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.