atresia

(ă-trē′zhă )

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[ ¹an- + Gr. trēsis, a perforation + -ia ]
Congenital absence or closure of a normal body opening or tubular structure.
atresicatretic (ă-trē′zik )

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(ă-trē′sik) (ă-tret′ik )

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, adj.

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