/ Dictionary / Index M misconception: Meaning and Definition of Find definitions for: mis•con•cep•tion Pronunciation: (mis"kun-sep'shun), [key] — n. an erroneous conception; mistaken notion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: misconception (Thesaurus) misconceive misconduct Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language