diogenite Syllabification: (di·og·e·nite)Pronunciation: /dīˈäjəˌnīt/Definition of diogenite noun a stony meteorite of a kind consisting largely of pyroxenes and plagioclase. Origin: late 19th century: from Greek Diogenēs 'descended from Zeus' + -ite1diogenite in other Oxford dictionaries Definition of diogenite in the British & World English dictionary