pteridosperm pteridophytous • pteridospermae · · · Info · Definitions · Synonyms · Characters · · pteridosperm · · Text Latin · · Script 12 · · Length 4 · · Syllables Definitions · · · (noun) an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae). Synonyms: seed fern. · · Noun Definition 1 Synonyms · · · seed fern · · Synonym 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074