Where does “Eneida” come from?

Eneida (Portuguese) comes from Russian Энеида, from Latin Aeneis, from Latin Aenēas, from Latin -is, from Latin -a, from Proto-Italic -ā, from Proto-Indo-European -éh₂.

Ancestry of “Eneida”, step by step

Eneida traces back through two separate lines of ancestry.

via Russian Энеида

StepLanguageWordMeaning
1RussianЭнеидаthe Aeneid
2LatinAeneis—
3LatinAenēas—
4Latin-issuffixed to the root of nouns in composition,...
5Latin-asuffixed to the roots of verbs, forms agent...
6Proto-Italic-āForms masculine agent nouns from prefixed or compounded bases
7Proto-Indo-European-éh₂—

via Latin Aeneida

StepLanguageWordMeaning
1LatinAeneida—
Every word from Proto-Indo-European -éh₂ →Every word from Latin -is →Every word from Latin -a →