-ennio

== Italian == === Etymology === Borrowed from Latin -ennium, from -ennis (annus + -is) + -ium. === Pronunciation === IPA(key): /ˈɛn.njo/ Rhymes: -ɛnnjo Hyphenation: -èn‧nio === Suffix === -ennio m (noun-forming suffix, plural -enni) (no longer productive) forms nouns from numbers, meaning "period of ~ years" ‎mille (“a thousand”) + ‎-ennio → ‎millennio (“millennium”) ‎dieci (“ten”) + ‎-ennio → ‎decennio (“decade”) ‎trenta (“thirty”) + ‎-ennio → ‎trentennio (“a period of thirty years”)