nemertean

nemertean

[ni-mur-tee-uhn]
noun
any member of the invertebrate phylum Nemertea, comprising the ribbon worms.
Also called ribbon worm.


Origin:
1860–65; < Neo-Latin Nemerte(a), derivative of Nemertes a genus (< Greek Nēmertḗs name of a Nereid; see -a2) + -an

nemertine [ni-mur-teen] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To nemertean
Collins
World English Dictionary
nemertean or nemertine (nɪˈmɜːtɪən, ˈnɛməˌtaɪn)
 
n
1.  Also called: ribbon worm any soft flattened ribbon-like marine worm of the phylum (or class) Nemertea (or Nemertina), having an eversible threadlike proboscis
 
adj
2.  of, relating to, or belonging to the Nemertea
 
[C19: via New Latin from Greek Nēmertēs a Nereid1]
 
nemertine or nemertine
 
n
 
adj
 
[C19: via New Latin from Greek Nēmertēs a Nereid1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Encyclopedia Britannica
Encyclopedia

nemertean

any member of the invertebrate phylum Nemertea (sometimes called Nemertinea, or Rhynchocoela), which includes mainly free-living forms but also a few parasites of crustaceans, mollusks, and sea squirts. The majority of the approximately 900 known nemertean species are found in marine habitats. Some, however, live in freshwater or on land. The name proboscis worm derives from the muscular eversible proboscis, which is housed in a chamber above the gut. This tube-shaped organ, which in many aquatic forms has a needlelike stylet, is typically used to trap the prey; in land-dwelling species it may be used for rapid movement

Learn more about nemertean with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Related Searches
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature