英语词汇“pneumatophore”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

pneumatophore

释义

pneumatophore|ˈpnjuːmətəʊˌfɔə(r), ˈnjuː-|
[f. pneumato- + Gr. -ϕορ-ος bearing.]
1. Zool. In certain ‘colonial’ or compound Hydrozoa of the order Siphonophora, A specialized part or individual of the ‘colony’, containing an air-cavity (pneumatocyst) and serving as a float.
1859Huxley Oceanic Hydrozoa 5 The float or pneumatophore is..a most remarkable and well-defined structure.1870Nicholson Man. Zool. 82 The large proximal dilatation of the coenosarc is termed the ‘pneumatophore’.1888Rolleston & Jackson Anim. Life 771 The pneumatophore or float, an air-vesicle distinctive of Physophoridæ, Physalidæ, and Discoideæ.
2. Bot. A structure having numerous lenticels, and supposed to serve as a channel for air, arising from the roots of various trees which grow in swampy places in the tropics.
1901Henslow in Gardener 9 Mar. 1241/3 The formation of ‘knees’ or ‘pneumatophores’, i.e. air conveyers.
Hence pneumatophorous |-ˈɒfərəs| a., of the nature of or pertaining to a pneumatophore.
1895in Syd. Soc. Lex.

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