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Pronunciation: si'a-thos'to-ma

Definition: One of three genera of gapeworms of poultry and other birds in the nematode family Syngamidae, so called because of the gaping habit of fowl infected by these upper respiratory tract parasites.

[G. kyathos, cup, cup-shaped, + stoma, mouth]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.