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单词 cycad
释义

cycad

/ˈsʌɪkad /
noun
A palm-like plant of tropical and subtropical regions, bearing large male or female cones. Cycads were abundant during the Triassic and Jurassic eras, but have since been in decline.
  • Class Cycadopsida, subdivision Gymnospermae: twenty species in the genus Cycas and family Cycadaceae.
Modern cycads are tropical plants whose ancestors can be traced in the fossil record for about 300 million years....
  • A few species of cycads still exist in tropical and sub-tropical regions today, and although they are used as ornamental plants some of them are facing possible extinction.
  • Instead of ponderosa pines, the dominant plants were cycads, which resemble tree ferns.

Origin

Mid 19th century: from modern Latin Cycas, Cycad- (order name), from supposed Greek kukas, scribal error for koikas, plural of koix 'Egyptian palm'.

Rhymes

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更新时间:2024/12/23 14:08:53