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arrowworm

[ ar-oh-wurm ]

noun

  1. any small, translucent marine worm of the phylum (or class) Chaetognatha, having lateral and caudal fins.


arrowworm

/ ˈærəʊˌwɜːm /

noun

  1. any small marine invertebrate of the genus Sagitta , having an elongated transparent body with fins and prehensile oral bristles: phylum Chaetognatha (chaetognaths)


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Word History and Origins

Origin of arrowworm1

First recorded in 1885–90; so called from a fancied resemblance to an arrow

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