/ Dictionary / Index P phenom: Meaning and Definition of Find definitions for: phe•nom Pronunciation: (fi-nom'), [key] — n. Slang. a phenomenon: a tennis phenom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phenolsulfonephthalein phenomena Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language