/ Dictionary / Index W whereby: Meaning and Definition of Find definitions for: where•by Pronunciation: (hwâr-bī', wâr-), [key] — conj., adv. by what or by which; under the terms of which. by what? how? Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. whereat where'd Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language