Mayer

US: (mī′ər or, Ger., mī′ər for 1; mā′ər for 2; mī′ər for 3)

WordReference Random House Unabridged Dictionary of American English © 2025

May•er  (mī′ər or, Ger., mī′ər for 1; mā′ər for 2;
mī′ər for 3), n. 

Jul•ius Rob•ert von  (jo̅o̅l′yəs  rob′ərt  von; Ger. yo̅o̅′lē ŏŏs rō′bert fən), 1814–78, German physicist. Louis B(urt)  (bûrt), 1885–1957, U.S. motion-picture producer, born in Russia. Maria Goep•pert  (gō′pərt), 1906–72, U.S. physicist, born in Poland: Nobel prize 1963.

Collins Concise English Dictionary © HarperCollins Publishers::

Mayer noun

1. / ˈmaiər/ Julius Robert von ( ˈjuːliʊs ˈroːbɛrt fɔn ). 1814–78, German physicist whose research in thermodynamics (1842) contributed to the discovery of the law of conservation of energy
2. / ˈmeɪə/ Louis B(urt). 1885–1957, US film producer, born in Russia; founder and first head (1924–48) of the Metro-Goldwyn-Mayer (MGM) film company