Definition of detrusor in English:

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Pronunciation: /dəˈtro͞ozər/
(also detrusor muscle)


A muscle that forms a layer of the wall of the bladder.
Example sentences
  • During normal voiding the detrusor muscle contracts and the muscles of the urethral sphincter and pelvic floor relax in a co-ordinated fashion to allow the bladder to empty.
  • The detrusor, levator ani, and external sphincter muscles share the sacral nerves as a common innervation source.
  • This is caused by the muscle of the bladder wall - known as the detrusor muscle - being overactive.


Mid 18th century: modern Latin, from Latin detrus- 'thrust down', from the verb detrudere.

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