Dionusos is simply didous oinon (giver of wine), Didoinusos, as he might be called in fun,-and oinos is properly oionous, because wine makes those who drink, think (oiesthai) that they have a mind (noun) when they have none.
Izan ere, Dionisos "ardoa" (oinos) ematen duena (didus) izango litzateke, (Didoinysos) txantxetan deituta, eta ardoa, edan duten gehienei zentzutasuna (nus) dutela sinestarazten (oiesthai) dienez, arrazoi osoz deituko litzateke "oionus".