Definition of aschelminth in English:


Syllabification: asc·hel·minth
Pronunciation: /ˈaskhelˌminTH, ˈaSHhel-

noun (plural aschelminths or aschelminthes /ˌaskhelˈminTHēz, ˌaSHhel-/)

  • An invertebrate animal belonging to a group of phyla that are distinguished by the lack of a well-developed coelom and blood vessels. Most aschelminths are minute wormlike animals, including the nematode worms, rotifers, and water bears.
    • Phylum Nematoda and about seven minor phyla, formerly placed in a phylum Aschelminthes
    More example sentences
    • Since aschelminths all lack substantial hard parts, their fossil record is extremely spotty.
    • Clearly, the status of several traditional ‘aschelminthes’ groups awaits further confirmation.
    • An alternative explanation is that it was a kind of aschelminth (pseudocoelomate worm), as indicated for example by its asymmetrical mouth.


from modern Latin Aschelminthes (former phylum name), from Greek askos 'sac' + helminth 'worm' (from the former belief that animals of this group had a fluid-filled internal sac).

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