noun. electromagnetic radiation that can produce photochemical reactions.
noun. ['ˈreɪ'] a column of light (as from a beacon).
noun. ['ˈreɪ'] a branch of an umbel or an umbelliform inflorescence.
verb. ['ˈreɪ'] extend or spread outward from a center or focus or inward towards a center.
noun. ['ˈreɪ'] cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins.
noun. ['ˈreɪ'] any of the stiff bony spines in the fin of a fish.
noun. ['ˈreɪ'] (mathematics) a straight line extending from a point.
noun. ['ˈreɪ'] the syllable naming the second (supertonic) note of any major scale in solmization.
noun. ['ˈreɪ'] a group of nearly parallel lines of electromagnetic radiation.
verb. ['ˈreɪ'] expose to radiation.