/ Dictionary / Index M Mendeleev: Meaning and Definition of Find definitions for: Men•de•le•ev Pronunciation: (men"dl-ā'uf Russ. myin-dyi-lye'yef&hasp), [key] 1834–1907, Russian chemist: helped develop the periodic law. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mendeleev (Thesaurus) Mendel Mendeleev's law Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language