/ Dictionary / Index B brain scan: Meaning and Definition of Find definitions for: brain' scan" Pronunciation: [key] — Med. Med. a scintigram of the brain, used to estimate cerebral blood flow and to detect brain tumors. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. brainpower brainsick Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language