Definition of horsehair worm in English:

horsehair worm

Pronunciation /ˈhôrsˌhe(ə)r wərm/ /ˈhɔrsˌhɛ(ə)r wərm/


  • A long slender worm related to the nematodes, the larvae being parasites of arthropods and the adults living in water or damp soil.

    Phylum Nematomorpha: two classes

    ‘These are the horsehair worms or Nematomorpha and the Gastrotricha.’
    • ‘No control is necessary for horsehair worms found outside or inside and they should just be ignored.’
    • ‘Locomotion of adult horsehair worms is a slow whipping action; males are more active than females.’
    • ‘Once the host enters the water, the horsehair worm breaks through the body wall of the host.’
    • ‘The good news is horsehair worms are internal parasites of insects only and do not harm humans, animals or plants.’