cenozoic cenotaphy • cenozoic era · · · Info · Definitions · Characters · · cenozoic · · Text Latin · · Script 8 · · Length 4 · · Syllables Definitions · · · (noun) approximately the last 63 million years. Synonyms: Cenozoic, Cenozoic era, Age of Mammals. · · Noun Definition 1 (adj) of or relating to or denoting the Cenozoic era. Synonyms: Cenozoic. · · Adjective Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F z latin small letter z U+007A