单词 | clitellum |
释义 | clitellumn. Zoology. The raised band encircling the body of earth-worms towards the middle. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Annelida > [noun] > class Chaetopoda > order Oligochaeta > family Lumbricidae > member of (earthworm) > band encircling body clitellum1839 cingulum1856 1839 Penny Cycl. XIV. 196/1 [Lumbricus] At the season of reproduction, the clitellum..becomes..a highly important agent. 1855 R. Owen Lect. Compar. Anat. Invertebr. Animals (ed. 2) xii Between the thirtieth and fortieth segments..is..the clitellum. 1877 T. H. Huxley Man. Anat. Invertebrated Animals v. 225 The eggs..are laid in chitinous cocoons or cases..probably secreted by the clitella. This entry has not yet been fully updated (first published 1889; most recently modified version published online June 2018). < n.1839 |
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