Mendeleyev men·de·leyev uncommon noun 1. Russian chemist who developed a periodic table of the chemical elements and predicted the discovery of several new elements (1834-1907) SynonymsMendeleevDmitri MendeleyevDmitri MendeleevDmitri Ivanovich MendeleyevDmitri Ivanovich Mendeleev Related words Broader terms chemist WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.