Pronunciation: (et'u-mon"), [key]
—pl. -mons, -maPronunciation: (-mu). [key]
the linguistic form from which another form is historically derived, as the Latin cor “heart,” which is the etymon of English cordial, or the Indo-European *(e)rd-, which is the etymon of Latin cor, Greek kardía, Russian serdtse, and English heart.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.