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Từ điển WordNet v3.1 - WordNet Dictionary
subdivision Cycadophytina
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: Cycadopsida, class Cycadopsida, Cycadophytina, Cycadophyta, subdivision Cycadophyta • Hypernyms: class • Member Holonyms: Gymnospermae, class Gymnospermae, Gymnospermophyta, division Gymnospermophyta • Member Meronyms: Cycadales, order Cycadales, Bennettitales, order Bennettitales
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