S: (n) black-body radiation, blackbody radiation (the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law)
S: (n) gamma radiation, gamma ray (electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength)
S: (n) line (a single frequency (or very narrow band) of radiation in a spectrum)
S: (n) microwave (a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens and for transmitting telephone, facsimile, video and data)
S: (n) re, ray (the syllable naming the second (supertonic) note of any major scale in solmization)
S: (n) ray (any of the stiff bony spines in the fin of a fish)
S: (n) ray (cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins)
Verb
S: (v) ray (emit as rays) "That tower rays a laser beam for miles across the sky"
S: (v) radiate, ray (extend or spread outward from a center or focus or inward towards a center) "spokes radiate from the hub of the wheel"; "This plants radiate spines in all directions"