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The measurement of the force of solar radiation. Maury.

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

A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.

A kind of embryo of certain hydroids (Tubularia), having a stellate form.

ion 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.…

In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.

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

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.

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

Tendency or impulse to act. [R.] Acturience, or desire of action, in one form or another, whether as restlessness, ennui, dissatisfaction, or the imagination of something desirable. J. Grote.

The insertion of needles into the living tissues for remedial purposes.

As a prefix ad- assumes the forms ac-, af-, ag-, al-, an-, ap-, ar-, as-, at-, assimilating the d with the first letter of the word to which ad- is prefixed. It remains unchanged before vowels, and before d, h, j, m, v. Examples: adduce, adhere, adjacent, admit, advent, accord, affect, aggregate, allude, annex, appear,…

The projection formed by the thyroid cartilage in the neck. It is particularly prominent in males, and is so called from a notion that it was caused by the forbidden fruit (an apple) sticking in the throat of our first parent. -- Adam's flannel (Bot.), the mullein (Verbascum thapsus). -- Adam's needle (Bot.), the pop…

ern minerology it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness. Opposed the rocky orb Of tenfold adamant, his ample shield. Milton.

led with pleasantly acid pulp. The wood is very soft, and the bark is used by the natives for making ropes and cloth. D. C. Eaton.

To make suitable; to fit, or suit; to adjust; to alter so as to fit for a new use; -- sometimes followed by to or for. For nature, always in the right, To your decays adapts my sight. Swift. Appeals adapted to his [man's] whole nature. Angus. Streets ill adapted for the residence of wealthy persons. Macaulay.…

The quality of being adaptable; suitableness. "General adaptability for every purpose." Farrar.

The result of adapting; an adapted form.

oncretion on reeds and grass in marshy grounds in Galatia. It is soft and porous, and was formerly used for cleansing the skin from freckles and tetters, and also in leprosy. Dana.

s, so as to increase the number, augment the quantity, enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally; as, to add numbers; to add up a column. Back to thy punishment, False fugitive, and to thy speed add wings. Milton. As easily as he can add together the ideas of…