nə̇ˈmərd.ēə noun plural
Usage: capitalized
Etymology: New Latin, from Nemertes, included genus (from Greek Nēmertēs Nemertes, one of the Nereids) + -ea (from Latin, neuter plural of -eus -eous)
: a class or other category of Platyhelminthes comprising soft-bodied often brightly colored unsegmented acoelomate worms that have an anterior mouth and posterior anus, a long eversible proboscis, and a definite circulatory system, are typically elongate and contractile, and are usually marine and littoral and burrow in sand or mud though a few live in fresh water or on land — see anopla , enopla
• ne·mer·te·an -ēən adjective or noun