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f cattle and man due to the presence of Actinomyces bovis. It causes local suppurating tumors, esp. about the jaw. Called also lumpy jaw or big jaw. -- Ac`ti*no*my*cot"ic (#), a.

An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays.

Pertaining to, or causing the production of, sound by means of the actinic, or ultraviolet, rays; as, actinophonic phenomena.

The mouth or anterior opening of a coelenterate animal.

A group of Coelenterata, comprising the Anthozoa Ctenophora. The sea anemone, or actinia, is a familiar example.

Of or pertaining to the Actinozoa.

A process or condition of acting or moving, as opposed to rest; the doing of something; exertion of power or force, as when one body acts on another; the effect of power exerted on one body by another; agency; activity; operation; as, the action of heat; a man of action. One wise in council, one in action brave. Pope.…

That may be the subject of an action or suit at law; as, to call a man a thief is actionable.

Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to Ant: passive, that receives; as, certain active principles; the powers of the mind.

The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities. "The activity of toil." Palfrey.

Without action or spirit. [R.]

A stuffed jacket worn under the mail, or (later) a jacket plated with mail. [Spelled also hacqueton.] [Obs.] Halliwell. Sir W. Scott.

One who acts, or takes part in any affair; a doer.

A female actor or doer. [Obs.] Cockeram.

Involving or comprising action; active. [Obs.] Her walking and other actual performances. Shak. Let your holy and pious intention be actual; that is . . . by a special prayer or action, . . . given to God. Jer. Taylor.

One who deals with or considers actually existing facts and conditions, rather than fancies or theories; -- opposed to idealist. J. Grote.

A making actual or really existent. [R.] Emerson.

Actively. [Obs.] "Neither actually . . . nor passively." Fuller.

Of or pertaining to actuaries; as, the actuarial value of an annuity.

A registar or clerk; -- used originally in courts of civil law jurisdiction, but in Europe used for a clerk or registar generally.