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单词 crenation
释义 crenation Bot., Zool., etc.|kriːˈneɪʃən|
[f. crenate: see -ation.]
A crenated formation; a rounded toothing, e.g. on the margin of a leaf or shell; scalloping; a crenature.
1846Dana Zooph. (1848) 490 The polyps..have twelve short tentacles..in some species they are mere crenations to the disk.1875H. C. Wood Therap. (1879) 317 A well-marked stellar crenation.1884Bower & Scott De Bary's Phaner. 376 In many teeth and crenations of the leaf.
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