Definition of Chaetognatha in English:

Chaetognatha

Syllabification: Chae·tog·na·tha
Pronunciation: /kēˈtägnəTHə
 
/
Zoology
  • A small phylum of marine invertebrates that comprises the arrow worms.
    More example sentences
    • Instead, Rouse's conclusion that ‘groups such as the Arthropoda, Brachiopoda, Chaetognatha, Ectoprocta, Gastrotricha, Phoronida may have lost a prototroch’ is totally gratuitous, and remains unaddressed by his own data.
    • Nielsen and Nielsen et al. come to generally comparable results, although sometimes the additional taxa Rotifera, Acanthocephala and Chaetognatha were included in Aschelminthes.
    • Also unresolved are the phylogenetic positions of Cycloneuralia, Chaetognatha, Gnathostomulida, Cycliophora, and Micrognathozoa.

Derivatives

chaetognath

Pronunciation: /ˈkētägˌnaTH/
noun
More example sentences
  • Into the early 1990s most researchers and evidence suggested that the deuterostomes were composed of chordates, hemichordates, echinoderms, chaetognaths, and lophophorates.
  • On the other hand, one species of parasitic nematode can reach 13 meters in length - it parasitizes the sperm whale - and adult nematomorphs, chaetognaths, and some priapulids are also visible to the naked eye.
  • Perversely, they failed to include any sequences from rotifers, gnathostomulids, chaetognaths, or, in fact, anything that might actually be comparable to Acanthocephala.

Origin

modern Latin (plural), from Greek khaitē 'long hair' + gnathos 'jaw'.

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