Urinate
来自Big Physics
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late 16th century: from medieval Latin urinat- ‘urinated’, from the verb urinare .
wiktionary
From urine + -ate, from Medieval Latin urino, from Classical Latin ūrīna(“urine”). More at urea.
etymonline
urinate (v.)
1590s, back-formation from urination or else from Medieval Latin urinatus, past participle of urinare, from urina (see urine). Related: Urinated; urinating.
