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 (nĭ-mûr′tē-ən) also nem·er·tine (nĕm′ər-tīn′)
Any of various unsegmented chiefly carnivorous worms of the phylum Nemertea (or Nemertini) that have a long, often brightly colored body with an extensible proboscis and typically live in the sea or in the mud of the intertidal zone. Also called ribbon worm.

[From New Latin Nēmertēs, type genus, from Greek, name of a Nereid.]

ne·mer′te·an adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(nɪˈmɜːtɪən) or


(Animals) Also called: ribbon worm any soft flattened ribbon-like marine worm of the phylum (or class) Nemertea (or Nemertina), having an eversible threadlike proboscis
(Animals) of, relating to, or belonging to the Nemertea
[C19: via New Latin from Greek Nēmertēs a Nereid1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(nɪˈmɜr ti ən)

also ne•mer•tine


any elongated, unsegmented, burrowing marine worm of the phylum Nemertinea (Nemertea).
Also called ribbon worm.
[1860–65; « Greek Nēmertḗs name of a Nereid]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nemertean - soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contractnemertean - soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract
worm - any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
When compared to nemertean GVBD that can start as early as 15 min post-stimulation, the lag between maturation stimulation and GVBD onset is longer in mammals, even at the higher temperatures used for such oocytes.
Epizootic infestations by nemertean brood parasites on commercially important crustaceans.
Oocyte maturation and fertilization in marine nemertean worms: using similar sorts of signaling pathways as in mammals, but often with differing results, 137
A modeling approach that incorporates the effects of disease in concert with fishing was developed for crustaceans infected with a nemertean parasite (Kuris & Lafferty 1992), but has not yet been fully developed for ESD and other newly described diseases (Shields et al.
Fundamental properties of the spiralian developmental program are displayed by the basal nemertean Carinoma tremaphoros (Paleonemertea, Nemertea).
Predation rates of nemertean predators: the case of a rocky shore hoplonemertean feeding on amphipods.
[beta]-catenin is required for the establishment of vegetal embryonic fates in the nemertean, Cerebratulus lacteus.
ABSTRACT Results of the histopathological study of mantle tissues of the commercial geoduck Panopea abbreviata hosting the nemertean Malacobdella arrokeana revealed that the normal histology of mantle tissues of the bivalve was not altered by the attachment structure of the nemertean, even when the maximum individuals per clam reached 191 nemerteans.
collaris after ciliation are in the range of 4-5 [micro]m, whereas those for the nemertean Carinoma tremaphoros, the polychaetes Nereis limbata and Polygordius sp., and the limpet Patella vulgata are 25-50, 11-22, 15, and 30 [micro]m, respectively (Maslakova et al., 2004; Costello, 1945; Woltereck, 1902; Damen and Dictus, 1994).
In the nemertean, Cerebratulus lacteus, injecting aqueous extracts from sperm can trigger repetitive [Ca.sup.2+] waves and resumption of meiotic maturation (Stricker 1997).
Immediately after the measurements, animals were dissected, and examined for the presence of the parasitic Nemertean worm, Malacobdella grossa.
Nemertean development is traditionally categorized into "indirect," meaning development via a long-lived plank-totrophie pilidium larva, as in most pilidiophoran species for which development is known (e.g., Coe, 1899, 1943; Dawydoff.