What does xanthogaster mean in Latin?

xanthogaster, a noun, means “yellow belly”.

What is the genitive of xanthogaster?

The genitive singular is xanthogasteris. xanthogaster is feminine, variously declined, third declension, second declension.

In classical Latin, [ksan.tʰɔˈɡas.tɛr]; in ecclesiastical (church) Latin, [ksan.toˈɡas.ter].

noun · femininevariously declined, third declension, second declension

xanthogaster f (genitive xanthogasteris or xanthogastrī)

Classical[ksan.tʰɔˈɡas.tɛr]Ecclesiastical[ksan.toˈɡas.ter]

declension
form	singular	plural
nominative	xanthogaster	xanthogasterēs xanthogastrī
genitive	xanthogasteris xanthogastrī	xanthogasterum xanthogastrōrum
dative	xanthogasterī xanthogastrō	xanthogasteribus xanthogastrīs
accusative	xanthogasterem xanthogastrum	xanthogasterēs xanthogastrōs
ablative	xanthogastere xanthogastrō	xanthogasteribus xanthogastrīs
vocative	xanthogaster	xanthogasterēs xanthogastrī

From Ancient Greek ξανθός (xanthós, “yellow”) + gaster (“belly”).