Rhyniaceae Rhynia • Rhynocheti · · · Info · Definitions · Characters · · Rhyniaceae · · Text Latin · · Script 10 · · Length Definitions · · · (noun) primitive plants of the Paleozoic. Synonyms: family Rhyniaceae. · · Noun Definition 1 Characters · · R latin capital letter r U+0052 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E y latin small letter y U+0079