/ Dictionary / Index P preconception: Meaning and Definition of Find definitions for: pre•con•cep•tion Pronunciation: (prē"kun-sep'shun), [key] — n. a conception or opinion formed beforehand. bias. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: preconception (Thesaurus) preconceive preconcert Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language