Category: C
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Ctenoid
With regularly spaced protuberances, like a comb.
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Crystal
A mineral solid, usually with regular angles and faces. A chemical formation of hard regular-shaped solids. A solid in which atoms are arranged in a specific symmetrical pattern, forming distinct lattices, with definable fixed angles, faces, walls, and interatomic relationships. Examples include ice and many salts. When discussing intensifying screens, the velocity of the screen…
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Cryptophyte
In Raunkiaer’s system, plant with a growing point that survives adverse seasons as resting bud below the surface of either ground or water.
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Cryptogam
Plant without stamen, pistil and true seed, but reproducing sexually; this term previously included ferns, lycophytes, mosses, algae, fungi and even some marine animals.
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Crypticotylar
With the cotyledons hidden, remaining within the seed coat.
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Crustaceous
Hard and brittle in texture.
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Crumpled
Folded irregularly.
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Cruciform
Shaped like a cross. Cross-shaped, as in the sepals and petals of the mustard family.
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Cruciate or Cruciform
Cross-shaped: with four parts forming a symmetric cross. (Of basidia or basidiospores) Having a cross shape; in basidia of certain jelly fungi the longitudinal wall formation inside the basidium after meiosis makes four compartments that appear cross-shaped from the top of the basidium; an important character of the order Tremellales; basidiospores can produce long wings…
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Crozier-shaped
Shaped like a bishop’s crozier, i.e. with the apex coiled in one plane, like young ferns.