ALL meanings of sphincter
sphinc·ter
S s - noun sphincter muscle: anal, etc. 1
- noun sphincter a circular band of voluntary or involuntary muscle that encircles an orifice of the body or one of its hollow organs. 1
- countable noun sphincter A sphincter is a ring of muscle that surrounds an opening to the body and that can tighten to close this opening. 0
- noun sphincter a ring of muscle surrounding the opening of a hollow organ or body and contracting to close it 0
- noun sphincter a ring-shaped muscle that surrounds a natural opening in the body and can open or close it by expanding or contracting 0