sipunculoidn.adj.
/sʌɪˈpʌŋkjᵿlɔɪd/, U.S. /ˌsaɪˈpəŋkjəˌlɔɪd/ Zoology. Now rare.
A. n.
An animal of the phylum or group Sipuncula (formerly Sipunculoidea or Sipunculoida), a peanut worm; = sipunculan n.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Annelida > [noun] > class Gephyrea > group Sipunculoidea > member of
sipunculoid1857
1857 L. J. R. Agassiz Contrib. Nat. Hist. U.S.A. I. 78 The Sipunculoids appear to be more closely related to the Annulata than to the Holothurioids.
1885 Encycl. Brit. XIX. 430 Forming with the Brachiopoda and Sipunculoids an isolated group.
1908 Science 25 Dec. 924/1 The sipunculoids comprise about thirty specimens which were all small and are considered as belonging to a single species of Phascolosoma.
1958 Q. Rev. Biol. 33 31/2 Dawydoff..states that the coelom of sipunculoids is never metamerized.
1976 Oecologia 24 222 From 80 to 120 m from shore the total number of species of attached and burrowing invertebrates was higher; annelids, sipunculoids, and molluscs were especially prevalent.
B. adj.
Of or relating to the phylum or group Sipuncula (formerly Sipunculoidea or Sipunculoida); = sipunculan adj.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Annelida > [adjective] > of or relating to class Gephyrea > of or belonging to group Sipunculoidea
sipunculoid1870
1870 Amer. Naturalist 4 495 Attention was called to the Sipunculoid worm with its anterior termination of intestine, and oviducts.
1885 Encycl. Brit. XIX. 431/1 The Sipunculoid Gephyræans..possessing identically this arrangement.
1969 Jrnl. Invertebr. Pathol. 14 292/2 Homologous and autologous implants were retained on the skin of the sipunculoid worm, Dendrostomum xostericolum, for as long as 8 days.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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n.adj.1857