(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance | cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins |
the apparent enlargement of a bright object when viewed against a dark background | any of the stiff bony spines in the fin of a fish |
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus | the syllable naming the second (supertonic) note of any major scale in solmization |
(physiology) the spread of sensory neural impulses in the cortex | a column of light (as from a beacon) |
a column of light (as from a beacon) | a group of nearly parallel lines of electromagnetic radiation |
the condition of being exposed to radiation | a branch of an umbel or an umbelliform inflorescence |
| (mathematics) a straight line extending from a point |