/ Dictionary / Index O 101: Meaning and Definition of Find definitions for: 101 Pronunciation: (wun'ō-wun'), [key] comprising the introductory material in or as if in a course of study (used postpositively): Economics 101; Life 101; It's Jungle 101 on a trip up the Amazon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: 101 (Thesaurus) one-horse Oneida Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language