- Harold Clayton. 1893–1981, US chemist, who discovered the heavy isotope of hydrogen, deuterium (1932), and worked on methods of separating uranium isotopes: Nobel prize for chemistry 1934
WordReference Random House Unabridged Dictionary of American English © 2026
U•rey
(yŏŏr′ē),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers::
Urey /ˈjʊərɪ/ n