sacrococcygeus dorsalis
noun
sa·cro·coc·cy·geus dor·sa·lis
| \ -käk-ˈsij-ē-əs-ˌdȯr-ˈsā-ləs
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Medical Definition of sacrococcygeus dorsalis
: an inconstant muscle that sometimes extends from the dorsal part of the sacrum to the coccyx
— called also posterior sacrococcygeal muscle