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Actinoid
a.
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Having the form of rays; radiated, as an actinia.
Actinolite
n.
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A bright green variety of amphibole occurring usually in fibrous or columnar masses.
Actinolitic
a.
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Of the nature of, or containing, actinolite.
Actinology
n.
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The science which treats of rays of light, especially of the actinic or chemical rays.
Actinomere
n.
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One of the radial segments composing the body of one of the Coelenterata.
Actinometer
n.
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An instrument for measuring the direct heating power of the sun's rays.
Actinometer
n.
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An instrument for measuring the actinic effect of rays of light.
Actinometric
a.
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Pertaining to the measurement of the intensity of the solar rays, either (a) heating, or (b) actinic.
Actinometry
n.
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The measurement of the force of solar radiation.
Actinometry
n.
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The measurement of the chemical or actinic energy of light.
Actinophorous
a.
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Having straight projecting spines.
Actinosome
n.
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The entire body of a coelenterate.
Actinost
n.
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One of the bones at the base of a paired fin of a fish.
Actinostome
n.
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The mouth or anterior opening of a coelenterate animal.
Actinotrocha
n. pl.
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A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.
Actinozoa
n. pl.
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A group of Coelenterata, comprising the Anthozoa and Ctenophora. The sea anemone, or actinia, is a familiar example.
Actinozoal
a.
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Of or pertaining to the Actinozoa.
Actinozoon
n.
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One of the Actinozoa.
Actinula
n. pl.
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A kind of embryo of certain hydroids (Tubularia), having a stellate form.
Action
n.
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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.
Action
n.
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An act; a thing done; a deed; an enterprise. (pl.): Habitual deeds; hence, conduct; behavior; demeanor.
Action
n.
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The event or connected series of events, either real or imaginary, forming the subject of a play, poem, or other composition; the unfolding of the drama of events.
Action
n.
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Movement; as, the horse has a spirited action.
Action
n.
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Effective motion; also, mechanism; as, the breech action of a gun.
Action
n.
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Any one of the active processes going on in an organism; the performance of a function; as, the action of the heart, the muscles, or the gastric juice.
Action
n.
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Gesticulation; the external deportment of the speaker, or the suiting of his attitude, voice, gestures, and countenance, to the subject, or to the feelings.
Action
n.
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A suit or process, by which a demand is made of a right in a court of justice; in a broad sense, a judicial proceeding for the enforcement or protection of a right, the redress or prevention of a wrong, or the punishment of a public offense.
Action
n.
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A right of action; as, the law gives an action for every claim.
Action
n.
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A share in the capital stock of a joint-stock company, or in the public funds; hence, in the plural, equivalent to stocks.
Action
n.
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An engagement between troops in war, whether on land or water; a battle; a fight; as, a general action, a partial action.