/ Dictionary / Index P phenomenon: Meaning and Definition of Find definitions for: phe•nom•e•non Pronunciation: (fi-nom'u-non", -nun), [key] — pl. -na -nons. a fact, occurrence, or circumstance observed or observable: to study the phenomena of nature. something that is impressive or extraordinary. a remarkable or exceptional person; prodigy; wonder. an appearance or immediate object of awareness in experience. Kantianism.a thing as it appears to and is constructed by the mind, as distinguished from a noumenon, or thing-in-itself. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phenomenon (Thesaurus) phenomenology phenoplast Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language