The story
From Latin dētrūdō (“to thrust, drive, or force away”) + -or, from dē- (“away, out”) + trūdō (“to thrust, to push, to drive”).
Etymology from Wiktionary, CC BY-SA 4.0.
detrusor
Today it means: A smooth muscle in the wall of the bladder that relaxes to allow urine to be stored and contracts to expel it; often used attributively. Full definition →