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The act of acknowledging; admission; avowal; owning; confession. "An acknowledgment of fault." Froude.

Pertaining to acnodes.

An isolated point not upon a curve, but whose coördinates satisfy the equation of the curve so that it is considered as belonging to the curve.

Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc.

Increasing by growth from the extremity; as, an acrogenous plant.

Having each verse begin with the same letter as that with which the preceding verse ends.

Chemistry in its relations to actinism. Draper.

A record made by the actinograph.

An instrument for measuring and recording the variations in the actinic or chemical force of rays of light. Nichol.

Having the form of rays; radiated, as an actinia.

A bright green variety of amphibole occurring usually in fibrous or columnar masses.

Of the nature of, or containing, actinolite.

The science which treats of rays of light, especially of the actinic or chemical rays.

One of the radial segments composing the body of one of the Coelenterata.

An instrument for measuring the direct heating power of the sun's rays.

Pertaining to the measurement of the intensity of the solar rays, either (a) heating, or (b) actinic.

The measurement of the force of solar radiation. Maury.

A chronic infectious disease of 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.

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