From The Collaborative International Dictionary of English v.0.48 [gcide]:
micturate \micturate\ v. i.
to pass urine through the ureter; to urinate. [Medical]
Syn: urinate, piddle, puddle, piss, pee, pee-pee, make water,
relieve oneself, take a leak, spend a penny, wee,
wee-wee, make, pass water.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) [wn]:
micturate
v 1: eliminate urine; "Again, the cat had made on the expensive
rug" [syn: make, urinate, piddle, puddle,
micturate, piss, pee, pee-pee, make water,
relieve oneself, take a leak, spend a penny, wee,
wee-wee, pass water]