/ Dictionary / Index P phenomenal: Meaning and Definition of Find definitions for: phe•nom•e•nal Pronunciation: (fi-nom'u-nl), [key] — adj. highly extraordinary or prodigious; exceptional: phenomenal speed. of or pertaining to phenomena. of the nature of a phenomenon; cognizable by the senses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phenomenal (Thesaurus) phenomena phenomenalism Related Content Daily Word Quiz: jovial Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language