/ Dictionary / Index N nuclear medicine: Meaning and Definition of Find definitions for: nu'clear med'icine Pronunciation: [key] diagnostic and therapeutic medical techniques using radionuclides or radioisotopes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nuclear magneton nuclear membrane Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language