extensor digiti minimi
noun
extensor dig·i·ti min·i·mi
| \ -ˈdij-ə-ˌtī-ˈmin-ə-ˌmī, -ˈdij-ə-ˌtē-ˈmin-ə-ˌmē
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Medical Definition of extensor digiti minimi
: a slender muscle on the medial side of the extensor digitorum communis that extends the little finger