micturition(n = noun.process) urination - the discharge of urine;
is a kind of elimination, evacuation, excreting, excretion, voiding
has particulars: leak, making water, passing water, wetting, lithuresis, nocturia, nycturia, oliguria, pee, peeing, piss, pissing
Derived form verb micturate1
The act of voiding urine; urination; also, a morbidly frequent passing of the urine, in consequence of disease. [1913 Webster]
micturition, n. formal urination.
Etymology:
L micturire micturit-, desiderative f. mingere mict- urinate