Pliocene Plinyism • Pliohippus · · · Info · Definitions · Characters · · Pliocene · · Text Latin · · Script 8 · · Length Definitions · · · (noun) from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals. Synonyms: Pliocene epoch. · · Noun Definition 1 Characters · · P latin capital letter p U+0050 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F