Webster's Dictionary 1913

1135

Actinium

Ac‐tin″i‐um (�), n.(Chem.) 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.

1136

Actino-chemistry

Ac′ti‐no–chem″is‐try (�), n. Chemistry in its relations to actinism. Draper.

1137

Actinogram

Ac‐tin″o‐gram (?), n. [Gr. �, �, ray + -gram.] A record made by the actinograph.

1138

Actinograph

Ac‐tin″o‐graph (�), n. [Gr. �, �, ray + -graph.] An instrument for measuring and recording the variations in the actinic or chemical force of rays of light. Nichol.

1139

Actinoid

Ac″tin‐oid (�), a. [Gr. �, �, ray + -oid.] Having the form of rays; radiated, as an actinia.

1140

Actinolite

Ac‐tin″o‐lite (�), n. [Gr. �, �, ray + -lite.] (Min.) A bright green variety of amphibole occurring usually in fibrous or columnar masses.

1141

Actinolitic

Ac′tin‐o‐lit″ic (�), a.(Min.) Of the nature of, or containing, actinolite.

1142

Actinology

Ac′ti‐nol″o‐gy (�), n. [Gr. �, �, ray + -logy.] The science which treats of rays of light, especially of the actinic or chemical rays.

1143

Actinomere

Ac‐tin″o‐mere (�), n.(Zoöl.) One of the radial segments composing the body of one of the Cœlenterata.

1144

Actinometer

Ac′ti‐nom″e‐ter (�), n. [Gr. �, �, ray + -meter] (a) An instrument for measuring the direct heating power of the sun's rays. (b) An instrument for measuring the actinic effect o...

1145

Actinometric

Ac′ti‐no‐met″ric (�), a. Pertaining to the measurement of the intensity of the solar rays, either (a) heating, or (b) actinic.

1146

Actinometry

Ac′ti‐nom″e‐try (�), n. 1. The measurement of the force of solar radiation. Maury.2. The measurement of the chemical or actinic energy of light. Abney.

1147

Actinomycosis

‖Ac′ti‐no‐my‐co″sis (?), n.(Med.) A chronic infectious disease of cattle and man due to the presence of Actinomyces bovis. It causes local suppurating tumors, esp. about the jaw...

1148

Actinophone

Ac‐tin″o‐phone (?), n.(Physics) An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays.

1149

Actinophonic

Ac‐tin′o‐phon″ic (?), a.(Physics) Pertaining to, or causing the production of, sound by means of the actinic, or ultraviolet, rays; as, actinophonic phenomena.

1150

Actinophorous

Ac′ti‐noph″o‐rous (�), a. Having straight projecting spines.

1151

Actinosome

Ac‐tin″o‐some (�), n.(Zoöl.) The entire body of a cœlenterate.

1152

Actinost

Ac″tin‐ost (�), n.(Anat.) One of the bones at the base of a paired fin of a fish.

1153

Actinostome

Ac‐tin″o‐stome (�), n.(Zoöl.) The mouth or anterior opening of a cœlenterate animal.

1154

Actinotrocha

‖Ac′ti‐not″ro‐cha (�), n. pl.(Zoöl.) A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.

1155

Actinozoa

‖Ac″ti‐no‐zo″a (�), n. pl. [Gr. �, �, ray + ζω̑ον animal.] (Zoöl.) A group of Cœlenterata, comprising the Anthozoa and Ctenophora. The sea anemone, or actinia, is a familiar exa...

1156

Actinozoal

Ac′ti‐no‐zo″al (�), a.(Zoöl.) Of or pertaining to the Actinozoa.

1157

Actinozoön

‖Ac″ti‐no‐zo″ön (�), n.(Zoöl.) One of the Actinozoa.

1158

Actinula

‖Ac‐tin″u‐la (�), n. pl.(Zoöl.) A kind of embryo of certain hydroids (Tubularia), having a stellate form.

1159

Action

Ac″tion (�), n. [OF. action, L. actio, fr. agere to do. See Act.] 1. A process or condition of acting or moving, as opposed to rest; the doing of something; exertion of power or...

1160

Actionable

Ac″tion‐a‐ble (�), a. [Cf. LL. actionabilis. See Action.] That may be the subject of an action or suit at law; as, to call a man a thief is actionable.

1161

Actionably

Ac″tion‐a‐bly, adv. In an actionable manner.