| 单词 |
clitellum |
| 释义 |
‖ clitellum Zool.|klaɪˈtɛləm| [mod.L., f. L. clitell-æ, a pack-saddle.] The raised band encircling the body of earth-worms towards the middle.
1839Penny Cycl. XIV. 196/1 s.v. Lumbricus, At the season of reproduction, the clitellum..becomes..a highly important agent. 1855Owen Invertebr. An. xii, Between the thirtieth and fortieth segments..is..the clitellum. 1877Huxley Anat. Inv. An. v. 225 The eggs..are laid in chitinous cocoons or cases..probably secreted by the clitella. |

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