- Cyathostomum
- A genus of strongyle nematodes (family Cyasthostomidae, formerly part of the family Strongylidae); it includes many of the small strongyles of horses formerly placed in the genus Trichonema, which have been variously divided into a number of genera and subgenera. [see Cyathostoma]
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Cya·tho·sto·mum (si″ə-tho-stoґmum) a genus of small nematodes of the family Strongylidae, which parasitize the large intestines of horses, causing cyathostomiasis.
Medical dictionary. 2011.