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cyca

ลองค้นหาคำในรูปแบบอื่น: -cyca-, *cyca*

WordNet (3.0) WordNet (3.0)

(n) any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves

(n) ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids, Syn. cycad family, family Cycadaceae

cycadales

(n) primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms, Syn. order Cycadales

cycadofilicales

(n) fossil gymnospermous trees or climbing plants from the Devonian: seed ferns, Syn. Lyginopteridales, order Lyginopteridales, order Cycadofilicales

cycadopsida

(n) 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. Cycadophytina, class Cycadopsida, subdivision Cycadophytina, Cycadophyta, subdivision Cycadophyta

cycas

(n) type genus of Cycadaceae: genus of widely distributed Old World evergreen tropical trees having pinnate leaves and columnar stems covered with persistent bases of old leaves, Syn. genus Cycas

The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)

Cycad

n. (Bot.) Any plant of the natural order Cycadaceæ, as the sago palm, etc. [ 1913 Webster ]

Cycadaceae

n. a natural family of ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids.
Syn. -- family Cycadaceae, cycad family. [ WordNet 1.5 ]

Cycadaceous

a. (Bot.) Pertaining to, or resembling, an order of plants like the palms, but having exogenous wood. The sago palm is an example. [ 1913 Webster ]

Cycadales

n. an order of primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms.
Syn. -- order Cycadales. [ WordNet 1.5 ]

Cycadofilicales

n. an order of fossil gymnospermous trees or climbing plants from the Devonian: seed ferns.
Syn. -- order Cycadofilicales, Lyginopteridales, order Lyginopteridales. [ WordNet 1.5 ]

Cycadopsida

n. a class or subdivision of plants comprising palmlike gymnosperms: it 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, subdivision Cycadophytina, subdivision Cycadophyta. [ WordNet 1.5 ]

Cycas

n. [ Of uncertain origin. Linnæus derives it from one of the “obscure Greek words.” ] (Bot.) A genus of trees, intermediate in character between the palms and the pines. The pith of the trunk of some species furnishes a valuable kind of sago. [ 1913 Webster ]

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