sipunculanadj.n.
/sʌɪˈpʌŋkjᵿlən/, U.S. /ˌsaɪˈpəŋkjələn/ Zoology.
A. adj.
Of or relating to the phylum or group Sipuncula.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Sipunculoidea > [adjective] > of or relating to member of family Sipunculidae
sipunculan1858
sipunculid1884
1858 Philos. Trans. (Royal Soc.) 148 139 In the Sipunculan Echinoderms [sic] there is no ciliated organ.
1970 Science 20 Mar. 1618/1 Asexual reproduction was unknown in sipunculan worms until Rajulu and Krishnan reported ‘budding’ in four specimens of Sipunculus robustus.
2004 J. W. Valentine On Origin of Phyla viii. 328 Sipunculan development is quite similar to that of mollusks and annelids.
B. n.
An animal of the phylum or group Sipuncula; a peanut worm.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Sipunculoidea > [noun] > member of
peanut worm1939
sipunculan1968
1968 Amer. Zoologist 8 796/2 There are four genera of sipunculans which appear capable of boring discrete holes in coral.
2000 Nature 25 May 403/3 Molluscs and sipunculans are lophotrochozoans, so their origins lie well above the common bilaterian ancestor in the metazoan tree.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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adj.n.1858