chaetognatha Meaning, Definition & Usage

  1. noun arrowworms: a group of small active transparent marine worms
    phylum Chaetognatha.

WordNet

Chæ*tog"na*tha noun plural (Also<
  • Chaetognatha
  • Chætognatha
)
Etymology
NL., from Gr. hair + jaw.
Definitions
  1. (Zoöl) An order of free-swimming marine worms, of which the genus Sagitta is the type. They have groups of curved spines on each side of the head.

Webster 1913