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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.


(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]


(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]
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
References in periodicals archive ?
This has recently been confirmed by the discovery of Cambrian chaetognath body fossils (Chen & Huang 2002) with grasping spines preserved, which is suggestive of an affiliation between coelocerodonts and chaetognaths.
Trematoda: Didymozoidae) in the chaetognath Serratosagitta serratodentata (Krohn 1853) from Caribbean waters.
In that study, light production could not be elicited from another deep-sea chaetognath, Eukrohnia fowleri Ritter-Zahony, 1909, probably owing to net damage to the fragile light organs.
A model of rapid-start swimming at intermediate reynolds number: undulatory locomotion in the chaetognath Sagitta elegans.
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.
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.
The head width, P, of the chaetognath can be estimated from the body length.
This chaetognath has been reported to migrate to near bottom and it has been associated to submerged vegetation (Thalassia testudinum) during the day.
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.
Complete cycle of development of a pelagic chaetognath in culture.