Where does “Octav” come from?

Octav (Romanian) comes from Latin Octāvius, from Latin octāvus, from Proto-Italic oktāwos, from Proto-Indo-European oḱtṓwos, from Proto-Indo-European oḱtṓw, from Proto-Indo-European aḱ- — sharp, pointed; sharp, pointed, edgy; sharp,...

Ancestry of “Octav”, step by step

StepLanguageWordMeaning
1LatinOctāvius—
2Latinoctāvuseighth; the ordinal number between septimus and nōnus
3Proto-Italicoktāwoseighth
4Proto-Indo-Europeanoḱtṓwoseighth
5Proto-Indo-Europeanoḱtṓweight
6Proto-Indo-Europeanaḱ-sharp, pointed; sharp, pointed, edgy; sharp,...
Every word from Proto-Indo-European aḱ- →Every word from Proto-Indo-European oḱtṓw →Every word from Proto-Indo-European oḱtṓwos →