/ Dictionary / Index P Petsamo: Meaning and Definition of Find definitions for: Pet•sa•mo Pronunciation: (Fin. pet'sä-mô), [key] — n. Finnish name of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pe-tsai PET scan Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language