单词 | sipunculid |
释义 | sipunculidn.adj. Zoology. A. n. An animal of the phylum or group Sipuncula (formerly Sipunculida), a peanut worm; = sipunculan n. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Annelida > [noun] > class Gephyrea > group Sipunculoidea > family Sipunculidae > member of sipunculid1876 1876 Proc. Royal Soc. 1875–6 24 570 Of the Gephyreans I have worked out immediately all those forms which were not quite common Sipunculids. 1893 Proc. Zool. Soc. 328 The papillæ..characteristic of the skin of Sipunculids. 1928 F. S. Russell & C. M. Yonge Seas i. 20 The Sipunculids..have a protrusible proboscis and a tough leathery body. 1967 P. A. Meglitsch Invertebr. Zool. xv. 646/2 Echiuroid nephridia are much like the nephridia of sipunculids. 2000 C. Tudge Variety of Life ii. v. 203 Annelids, arthropods, and molluscs do not form a natural grouping, and so the position of the sipunculids remains uncertain. B. adj. Of or relating to the phylum or group Sipuncula (formerly Sipunculida); = sipunculan adj. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Sipunculoidea > [adjective] > of or relating to member of family Sipunculidae sipunculan1858 sipunculid1884 1884 Jrnl. Linnean Soc.: Zool. 18 24 A Sipunculid worm lives in the base of the coral, communicating with the outside by means of small openings. 1934 Proc. Royal Soc. B. 115 368 Chlorocruorin is found only in certain polychaete worms.., hæmerythrin in sipunculid worms.., and hæmocyanin in arthropods and molluscs. 1962 D. Nichols Echinoderms xii. 173 The blastopore of the sipunculid larva is the site of, or close to, the future adult mouth. 2004 Marine Geol. 212 99/1 A non-diffusive particle mixing event..was attributed to echiurian or sipunculid worms retrieved from these sediments. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.adj.1876 |
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