urea (n.)

c. 1300, from Old French orine, urine (12c.) and directly from Latin urina "urine," from PIE *ur- (source also of Greek ouron "urine"), variant of root *we-r- "water, liquid, milk" (source also of Sanskrit var "water," Avestan var "rain," Lithuanian jūrės "sea," Old English wær, Old Norse ver "sea," Old Norse ur "drizzling rain"), related to *eue-dh-r (see udder).

pyramidine base, coined in German, 1885, perhaps from urea + German Acetsäure "acetic acid" (or possibly acrylic) + chemical suffix -il.

1838, from French uréthane (1833), coined by Dumas, apparently from urea + ether + -ane as a generic chemical suffix.