Webster's 1913 Dictionary
SIPUNCULACEA
Si *pun `cu *la "ce *a, n. pl. Etym: [NL. , from Sipunculus, the typical genus. See Siphuncle. ] (Zoöl.)
Defn: A suborder of Gephyrea, including those which have the body unarmed and the intestine opening anteriorly.
New American Oxford Dictionary
Sipuncula
Si pun cu la |sīˈpəNGkyələ saɪˈpəŋkjələ |Zoology a small phylum that comprises the peanut worms. DERIVATIVES si pun cu lan |-lən |noun & adjective, si pun cu lid |sīˈpəNGkyəlid |noun & adjective ORIGIN modern Latin (plural ), from Sipunculus (genus name ), based on a variant of Latin siphunculus ‘small tube. ’
Oxford Dictionary
Sipuncula
Sipuncula |sʌɪˈpʌŋkjʊlə | ▶plural noun Zoology a small phylum that comprises the peanut worms. Also called Sipunculida. DERIVATIVES sipunculan noun & adjective, sipunculid noun & adjective ORIGIN modern Latin (plural ), from Sipunculus (genus name ), based on a variant of Latin siphunculus ‘small tube ’.
The Wordsmith Dictionary