chaetognath

Definitions of chaetognath

1. noun

   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
   synonyms: arrowworm

   types:

   sagitta

   any arrowworm of the genus Sagitta

   type of:

   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