/ Dictionary / Index F Franken-: Meaning and Definition of Find definitions for: Franken- Pronunciation: [key] a prefix used esp. before names of foods, meaning “genetically engineered”: Frankentomato. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. franked mail Frankenstein Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language