Radiate

Radiate, rā′di-āt, v.i. to emit rays of light: to shine: to proceed in direct lines from any point or surface.—v.t. to send out in rays: to furnish with rays.—adjs. Rā′diāte, -d, formed of rays diverging from a centre: (bot.) consisting of a disc in which the florets are tubular: (min.) having crystals diverging from a centre: belonging to the Radiata: in coins, represented with rays proceeding from a centre, as a head or bust.—adv. Rā′diately, in a radiate manner: with radiation from a centre.—adj. Rādiā′tiform, having the appearance of being radiate.—adv. Rā′diatingly.—n. Rādiā′tion, act of radiating: the emission and diffusion of rays of light or heat.—adj. Rā′diative.—n. Rā′diator, a body which radiates or emits rays of light or heat: a part of a heating apparatus for a room.—adj. Rā′diatory.—ns. Rādioflagell′ata, marine animalcules; Rā′diograph, an instrument by which solar radiation is measured.—adj. Rādiolā′rian, pertaining to the ooze at the bottom of the sea, composed of the shells of Radiolā′rians, a class of marine rhizopod Protozoa, so called from their having thread-like processes of living matter radiating outwards on all sides.—ns. Rādī′olus, one of the barbules of the main shaft of a feather; Rādiom′eter, an instrument consisting of four horizontal arms of very fine glass, carefully poised so as to revolve easily on a point, the whole contained in a glass vessel almost exhausted of air—the arms move round under light or heat, more or less swiftly according to the strength of the rays.—adj. Rādiomet′ric.—ns. Rādiomicrom′eter, an instrument for measuring very small amounts of heat; Rā′diophone, an instrument for producing or transmitting sound by heat-rays.—adj. Rādiophon′ic.—ns. Rādiophon′ics, Rā′diophony, the production of sound by radiant heat; Rā′dium, a rare element whose radiations act upon photographic plates and have properties like the X-rays.