Definition of helminth in US English:



  • A parasitic worm; a fluke, tapeworm, or nematode.

    • ‘Soil-transmitted helminth and schistosomes are great public health problems in several tropical and subtropical developing countries with poor socio-economic status and personal hygiene.’
    • ‘Harmless worms called helminths can also be useful in helping to train the immune system.’
    • ‘Humans and other animals have been living with helminths, or worms, since the dawn of time, and our intestinal tracts have adapted to their presence.’
    • ‘The cnidarians (hydra, jellyfish, and sea anemones) and helminths have a sac-like digestive system with a single opening.’
    • ‘The most common helminths are tapeworms and roundworms.’


Mid 19th century: from Greek helmins, helminth- ‘intestinal worm’.