单词 | rotifera |
释义 | Rotiferan. Zoology. With plural (or occasionally singular) agreement. A phylum of minute or microscopic aquatic animals characterized by an anterior ring of cilia (the corona) that is used in feeding and (in most kinds) swimming. Also, with plural agreement (also in form rotifera): animals of this phylum (collectively or individually); rotifers, wheel animalcules. Cf. Rotatoria n.The Rotifera are pseudocoelomates and they were formerly regarded as a class of the phylum Aschelminthes. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] Rotifera1823 1823 Mem. Wernerian Nat. Hist. Soc. 4 487 Upon placing it in a glass of the Tay water..for the purpose of inducing the parasitical rotiferæ to expand.., I was glad to find the Sertularia itself in a living state. 1830 Foreign Rev. 5 372 The first order is called rotifera, and comprehends those which have an oval gelatinous body, with a mouth, a stomach, an intestine, and an anus situate near the mouth. 1834 H. McMurtrie tr. G. Cuvier Animal Kingdom 494 The Rotiferæ, as stated above, are distinguished by a greater degree of complication. 1861 H. J. Slack Marv. Pond-life 23 Following the Protozoa, come the Rotifera, or Wheel-bearers. 1900 Science 16 Feb. 256/2 The plankton being composed of a few hibernal and a smaller number of perennial species principally of Rhizopoda, Copepoda and Rotifera. 1927 S. A. Waksman Princ. Soil Microbiol. xiv. 351 Rotatoria or Rotifera, commonly known as wheel animalcules, are minute, chiefly microscopic, animals. 1953 H. Mellanby Animal Life in Fresh Water (ed. 5) xiii. 257 (heading) The wheel animalcules (rotifera). 1978 L. C. Oglesby in P. J. Mill Physiol. Annelids xiv. 619 In only one group, the Rotifera, is there direct evidence that the protonephridia serve an osmoregulatory role. 2002 New Scientist 2 Feb. 109/2 There are also the pseudocoelomates, a group containing the Rotifera and Nematoda. DerivativesΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [adjective] rotiferous1833 wheel-bearing1846 rotiferal1847 1847 A. Tulk tr. L. Oken Elements Physiophilos. 588 Rotiferal Worms [Ger. Räderthierartige Würmer], Ascarides. 1868 C. Neidhard Crotalus Horridus p. xi The production of this animalized and indescribable stench, was accompanied by the appearance..of rotiferal and other minute forms of animalcular life. 1897 Trans. Amer. Microsc. Soc. 19 43 The successions and variations noted in the rotiferal fauna have proved interesting. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1823 |
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