sipunculoid
/sʌɪˈpʌŋkjʊlɔɪd/Zoology. Now rare
noun
An animal of the phylum or group Sipuncula (formerly Sipunculoidea or Sipunculoida), a peanut worm.
adjective
Of or relating to the phylum or group Sipuncula (formerly Sipunculoidea or Sipunculoida).
Origin
Mid 19th century; earliest use found in Louis Agassiz (1807–1873), zoologist and geologist. From Sipunculus + -oid, after scientific Latin Sipunculoidea.