1 definition by OED

Of, pertaining to, or having well-shaped or finely developed buttocks.

From the Greek 'beauty' + 'buttocks', also the name of a famous statue of Venus
1648 Sir T. Browne Pseud. Ep. Calliphygae nd women largely composed behinde.

1800 The Calliphygian Venus

1885 Athenaeum The Calliphygian luxuriance he so deplores
by OED January 8, 2005
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