phylum Chaetognatha

Thesaurus

Noun

1.

phylum Chaetognatha - arrowworms: a group of small active transparent marine wormsChaetognathaanimal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animalsarrowworm, chaetognath - 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 mouthgenus Sagitta - chief genus of Chaetognatha including the largest arrowwormsgenus Spadella - marine worms resembling the sagittas but with a broader body and only one pair of lateral finsphylum - (biology) the major taxonomic group of animals and plants; contains classes