Where does “callipygous” come from?

callipygous (English) comes from Ancient Greek κάλλος, from Ancient Greek κᾰλός, from Proto-Indo-European kal-wo-s, from Proto-Indo-European kal- — hard; beautiful; handsome.

callipygous (English): Having shapely, beautiful buttocks

Definitions

Having shapely, beautiful buttocks

Ancestry of “callipygous”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	κάλλος	beauty; nobility; a beautiful person or thing
2	Ancient Greek	κᾰλός	beautiful, morally beautiful, of good quality;...
3	Proto-Indo-European	kal-wo-s	—
4	Proto-Indo-European	kal-	hard; beautiful; handsome

Every word from Proto-Indo-European kal- →Every word from Proto-Indo-European kal-wo-s →Every word from Ancient Greek κᾰλός →