Cycadopsida

Từ điển WordNet v3.1 - WordNet Dictionary

noun

palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders;
possibly not a natural group;
in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta)
• Syn:
class Cycadopsida, Cycadophytina, subdivision Cycadophytina, Cycadophyta, subdivision Cycadophyta
• Hypernyms:
class
• Member Holonyms:
Gymnospermae, class Gymnospermae, Gymnospermophyta, division Gymnospermophyta
• Member Meronyms:
Cycadales, order Cycadales, Bennettitales, order Bennettitales