| cycad |
any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
출처: wordnet.princeton.edu/perl/webwn
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| cycad |
any of the palm-like, woody plants that constitute the order Cycadales. The order consists of four families: Cycadaceae, Zamiaceae, Stangeriaceae, and Boweniaceae. Some authorities use the term cycad to refer to all members of the division Cycadophyta. Plants of this division are known to have existed in the Mesozoic Era, about 245 to 66.4 million years ago. Only the order Cycadales contains living species.
출처: www.msnucleus.org/membership/html/jh/earth/diction...
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| cycad |
a seed-bearing plant similar in appearance to modern palm trees. They first appeared in the Permian, and were common in the Mesozoic, but are rare today, having been displaced by flowering, fruit-bearing plants which appeared in the Cretaceous.
출처: www.sedgwickmuseum.org/education/glossary.html
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| cycad |
(s ' kad) A group of trees from the order Cycadales. These are tropical trees and shrubs with thick stems, crowns of fernlike leaves, and fleshy seeds enclosed in large cones.
출처: www.fort.usgs.gov/resources/education/bts/resource...
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