ray in WordNet English dictionary

1. a column of light (as from a beacon)
   beam  beam of light  light beam  ray  ray of light  shaft  shaft of light  irradiation 
   
2. a group of nearly parallel lines of electromagnetic radiation
   beam  ray  electron beam 
   
3. cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
   ray 
   
4. any of the stiff bony spines in the fin of a fish
   ray 
   
5. the syllable naming the second (supertonic) note of any major scale in solmization
   re  ray 
   
6. a branch of an umbel or an umbelliform inflorescence
   ray 
   
7. (mathematics) a straight line extending from a point
   ray 
   

1. expose to radiation
   "irradiate food"
   irradiate  ray 
   
2. 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"
   radiate  ray 
   
3. emit as rays
   "That tower rays a laser beam for miles across the sky"
   ray