electromagnetic radiation that can produce photochemical reactions
a column of light (as from a beacon)
(mathematics) a straight line extending from a point
cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
any of the stiff bony spines in the fin of a fish
the syllable naming the second (supertonic) note of any major scale in solmization
