extensor digitorum communis
noun
extensor digitorum com·mu·nis
| \ -kə-ˈmyün-əs
, -ˈkäm-yə-nəs
\
, -ˈkäm-yə-nəs
\
Medical Definition of extensor digitorum communis
: a muscle on the back of the forearm that extends the fingers and wrist