Where does “micturition” come from?

Micturition derives from Latin micturio, meaning to urinate.

micturition (English): urination

Definitions

Step	Language	Word	Meaning
1	Latin	micturio	to urinate
2	Latin	mingo	to urinate
3	Proto-Indo-European	h₃mi-n-ǵʰ-	—
4	Proto-Indo-European	h₃meyǵʰ-	to urinate

micturition — Etymology, Origin & Word History | Etymology Explorer