SINCE 1828
tonus
noun
to·nus
| \ ˈtō-nəs
\
\
Definition of tonus
: tone sense 9b
especially
: a state of partial contraction characteristic of normal muscle
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More Definitions for tonus
tonus
noun
to·nus
| \ ˈtō-nəs
\
\
Medical Definition of tonus
1
: tone sense 2a
2
: a state of partial contraction that is characteristic of normal muscle, is maintained at least in part by a continuous bombardment of motor impulses originating reflexly, and serves to maintain body posture
— called also muscle tone
— compare clonusComments on tonus
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