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[From New Latin Chaetognatha, phylum name : chaeta, chaeta; see chaeta + Greek gnathos, jaw; see genu- in Indo-European roots.]

chae′tog·nath′ 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.


(Animals) any small wormlike marine invertebrate of the phylum Chaetognatha, including the arrowworms, having a coelom and a ring of bristles around the mouth
[C19: New Latin Chaetognatha, literally: hair-jaw, from chaeta + Greek gnathos jaw]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈki tɒgˌnæθ, -təg-)

1. any invertebrate of the phylum Chaetognatha, comprising the arrowworms.
2. Also, chae•tog•na•than (kiˈtɒg nə θən) belonging or pertaining to the chaetognaths.
[1885–90; < New Latin Chaetognatha]
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.chaetognath - any worm of the Chaetognathachaetognath - any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth
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
Chaetognatha, phylum Chaetognatha - arrowworms: a group of small active transparent marine worms
sagitta - any arrowworm of the genus Sagitta
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
A possible Lower Cambrian chaetognath (arrow worm).
(Trematoda: Didymozoidae) in the chaetognath Serratosagitta serratodentata (Krohn 1853) from Caribbean waters.
Habitat depths of the two chaetognath species under investigation were expressed as minimum depth of occurrence, the depth below which 90% of the population can usually be found (Childress, 1975).
A model of rapid-start swimming at intermediate reynolds number: undulatory locomotion in the chaetognath Sagitta elegans.
Responses of the chaetognath, Sagitta elegans, and larval Pacific hake, Merluccius productus, to spring diatom and copepod blooms in a temperate fjord (Dabob Bay, Washington, USA).
Multigene analysis of lophophorate and chaetognath phylogenetic relationships.
Reports of the dominant chaetognath species in the area Ferosagitta hispida and Flaccisagitta enflata (Grassi) (Ramirez-Avila and Alvarez-Cadena 1999) and fish larvae (Ordonez-Lopez, pers.
of Area (n) fish Chiniak Bay 5 75 Ugak Bay [less than or 3 31 equal to] 66 mm >66 mm 4 60 Kiliuda Bay [less than or 1 5 equal to] 66 mm >66 mm 6 61 Shelf 6 65 Prey (number of individuals/fish) (1) crab Area amphipod chaetognath copepod larvae Chiniak Bay 2.8 t 4.1 0.1 Ugak Bay [less than or 0.1 0.6 11.2 0.6 equal to] 66 mm >66 mm 0.1 t 5.9 15.9 Kiliuda Bay [less than or 0.0 0.2 2.2 1.0 equal to] 66 mm >66 mm t t t 6.4 Shelf 0.3 0.0 0.1 0.1 Prey (number of individuals/fish) (1) shrimp Area cumacean euphausiid mysid larvae Chiniak Bay 0.0 3.7 0.4 t Ugak Bay [less than or 0.0 0.1 t 0.0 equal to] 66 mm >66 mm t 3.3 0.2 t Kiliuda Bay [less than or 0.0 0.2 0.0 0.0 equal to] 66 mm >66 mm t 2.7 t t Shelf t 2.8 0.4 0.1 No.
Complete cycle of development of a pelagic chaetognath in culture.
The numbers of individuals of each prey taxon were estimated from the numbers of prey parts, such as copepod mandibles, amphipod heads and chaetognath seizing hooks.
Daily ration and specific daily ration of the chaetognath Sagitta enflata.
This chaetognath has been reported to migrate to near bottom and it has been associated to submerged vegetation (Thalassia testudinum) during the day.