pteridosperms

英[tiərɪ'dɒspəmz] 美[tiərɪ'dɒspəmz]
  • 种子蕨类
  • authority n.权力;官方;当局;职权;权威
  • PTT abbr.邮电总局(=Posts;TelegraphsandTelephones)
名词 pteridosperm:
  1. an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)