/ Dictionary / Index P PET scan: Meaning and Definition of Find definitions for: PET' scan" Pronunciation: [key] an image obtained by positron emission tomography, using a PET scanner. an examination performed with a PET scanner. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Petsamo PET scanner Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language