involuntary muscle

noun

Definition of INVOLUNTARY MUSCLE

: muscle governing reflex functions and not under direct voluntary control; especially : smooth muscle

See involuntary muscle defined for kids

1840

Medical Dictionary

noun

: muscle governing reflex functions and not under direct voluntary control; especially : smooth muscle

Next Word in the Dictionary: involuntary trustPrevious Word in the Dictionary: involuntary manslaughterAll Words Near: involuntary muscle

What made you want to look up involuntary muscle? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears