| 单词 | cirrus |
| 释义 | cirrus /sir"euhs/, n. , pl. cirrus for 1, cirri /sir"uy/ for 2, 3. 1. Meteorol. a. a cloud of a class characterized by thin white filaments or narrow bands and a composition of ice crystals: of high altitude, ab. 20,000-40,000 ft. (6000-12,000 m). b. a cirriform cloud. 2. Bot. a tendril. 3. Zool. a. a filament or slender appendage serving as a foot, tentacle, barbel, etc. b. the male copulatory organ of flatworms and various other invertebrates. [1700-10; < L: a curl, tuft, plant filament like a tuft of hair] |
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