| 单词 | trochal organ |
| 释义 | > as lemmastrochal organ a. Zoology. Resembling a wheel; rotiform: as the trochal apparatus, trochal disc, or trochal organ of the Rotifera, an organ of locomotion consisting of two rings of cilia surrounding the mouth. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [adjective] > resembling a wheel trochal1855 1855 T. R. Jones Gen. Outl. Animal Kingdom (ed. 2) ix. 191 The space between the two layers of the trochal disc. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 632 Class Rotifera. Unisegmental Vermes with a retractile trochal apparatus at the anterior end of the body. 1899 New Sydenham Soc. Lexicon Trochal organ, the characteristic oral organ of the Rotifera. < as lemmas |
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