Radiation1. (n.) The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.
2. (n.) The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.
Thesaurus Entries
X ray, actinic ray, actinism, arc lighting, asteroids, atomic beam, atomic ray, attenuation, aurora particles, beam, beam of light, black and white, blackout, broadcast, broadcasting, chiaroscuro, circumfusion, contrast, cosmic particles, cosmic ray bombardment, decorative lighting, diffraction, diffusion, dilution, direct lighting, dispensation, dispersal, dispersion, dissemination, dissipation, distribution, divergence, electric lighting, emanation, emission, enlightenment, evaporation, expansion, festoon lighting, floodlighting, fluorescent lighting, fragmentation, gamma ray, gaslighting, gleam, glow lighting, highlight, highlights, illumination, incandescent lighting, indirect lighting, infrared ray, intergalactic matter, invisible radiation, irradiance, irradiancy, irradiation, leam, light, light and shade, light source, lighting, luminous energy, meteor dust impacts, meteors, overhead lighting, patch, pencil, peppering, photon, photosensitivity, propagation, publication, radiance, radiancy, radiant energy, radiorays, radius, ray, ray of light, ribbon, ribbon of light, scattering, scatterment, shedding, shotgun pattern, sidelight, solar rays, sowing, space bullets, spattering, splay, spoke, spot lighting, spread, spreading, sprinkling, stage lighting, streak, stream, stream of light, streamer, strewing, strip lighting, the bends, tonality, ultraviolet ray, violet ray, visible radiation, volatilization, weightlessness