early 15c., from Medieval Latin urinationem (nominative urinatio), noun of action from past participle stem of urinare (v.), from urina (see urine.
Entries linking to urination
urine 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).
urinate v.
1590s, back-formation from urination or else from Medieval Latin urinatus, past participle of urinare, from urina (see urine). Related: Urinated; urinating.