Where does “oma-” come from?

oma- (Finnish) comes from Catalan -à, from Latin -a, from Proto-Italic -ā, from Proto-Indo-European -éh₂.

Ancestry of “oma-”, step by step

StepLanguageWordMeaning
1Catalan-à-an; -ane
2Latin-asuffixed to the roots of verbs, forms agent...
3Proto-Italic-āForms masculine agent nouns from prefixed or compounded bases
4Proto-Indo-European-éh₂—

Words derived from “oma-”

Every word from Proto-Indo-European -éh₂ →Every word from Latin -a →Every word from Catalan -à →