Ischial callosity

Definitions

  • Webster's Revised Unabridged Dictionary
    • Ischial callosity (Zoöl) one of the patches of thickened, hairless, and often bright-colored skin, on the buttocks of many apes, as the drill.
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Usage

In literature:

Ischial callosities are well developed.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
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