pygian

From Ancient Greek πυγή (pugḗ, “buttocks”) +‎ -ian, or extracted from callipygian and similar terms.

• IPA^(key): /ˈpɪ.d͡ʒi.ən/

pygian (comparative more pygian, superlative most pygian)

1. (rare) Pertaining to or resembling buttocks.
   • 1841, The Knickerbocker; Or, New-York Monthly Magazine, page 483:

     [...] and the terrible conviction forced itself upon my mind, that progress for me in this path there was none, until my executioner should have turned my pygian epidermis into a road-map, and have engraved all my stopping places indelibly ...

   • 1980, Harry Ezekiel Wedeck, Roman morals: a survey of depravity, page 63:

     Pygian Mysteries
     Eumolpus did not hesitate to invite the girl to the pygian mysteries. He asked her to sit down on the good part recommended to her (that is, on himself, to whose goodness her mother had recommended her daughter).

• natiform (“resembling or having the shape of buttocks”)

• paying