Dictionary
Som•mer•feld
Pronunciation: (zôm'ur-felt"), [key]—
n.
Ar•nold (Jo•han•nes Wil•helm)
Pronunciation: (är'nôlt yō-hän'us vil'helm), [key]1868–1951, German physicist.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.