acrotarsium

noun
ac·​ro·​tar·​si·​um | \ˌa-krō-ˈtär-sē-əm\
plural acrotarsia\ˌa-​krō-​ˈtär-​sē-​ə \

Definition of acrotarsium 

: the instep of the foot

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First Known Use of acrotarsium

circa 1889, in the meaning defined above

History and Etymology for acrotarsium

New Latin, from acr- + tarsus + -ium

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The first known use of acrotarsium was circa 1889

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