1. Lacking phasmids, as seen in nematodes of the class Adenophorasida (Aphasmidia). 2. Common name for a member of the class Aphasmidia, now Adenophorasida.

* * *

aphas·mid (a-fazґmid) [a-1 + phasmid] a nematode belonging to the subclass Aphasmidia. Cf. phasmid.

Medical dictionary. 2011.

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  • Capillaria — A genus of aphasmid nematode worms, characterized by threadlike appearance; related to Trichuris. [L. capillaris, fr. capillus, hair] C. hepatica species of threadworm that infects the liver in rodents; occasionally reported from humans. C.… …   Medical dictionary

  • phasmid — 1. One of a pair of caudal chemoreceptors seen in nematodes of the class Secernentasida (Phasmidia). 2. Common name for a member of the class Phasmidia, now Secernentasida. * * * phas·mid fas mid n …   Medical dictionary

  • Trichinella — A nematode genus in the aphasmid group that causes trichinosis in humans and carnivores. [Mod. L. fr. trichina + dim. suffix ella] T. pseudospiralis. nematode species with normal life cycle in small predators; humans are an accident …   Medical dictionary

  • Trichuris — A genus of aphasmid nematodes (sometimes improperly termed Trichocephalus) related to the trichina worm, Trichinella spiralis, and having a body with a slender, elongated, anterior portion threaded into the mucosa of the colon or large intestine… …   Medical dictionary

  • Trichuroidea — Trich·u·roi·dea (trik″u roiґde ə) a superfamily of aphasmid nematodes including the families Trichinellidae and Trichuridae …   Medical dictionary

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