Thesaurus: rays

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