Amazonomachia

Borrowed from French Amazonomachie or German Amazonomachie, or a direct learned borrowing from their etymon Ancient Greek Ἀμαζονομᾰχῐ́ᾱ (Amazonomăkhĭ́ā), from Ἀμαζών (Amazṓn, “mythical female warrior from the Black Sea region”) (for further etymology see that entry) + μᾰ́χη (mắkhē, “battle, combat”) (either ultimately from Proto-Indo-European *meh₂gʰ- (“to fight”) or Pre-Greek) + -ῐ́ᾱ (-ĭ́ā, suffix forming feminine abstract nouns).

The plural form Amazonomachiae is derived from Amazonomachia + Latin -iae (plural form of -ia), while Amazonomachiai is a learned borrowing from Ancient Greek Ἀμαζονομᾰχῐ́αι (Amazonomăkhĭ́ai).