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English definition of “pulmonary atresia”

pulmonary atresia

noun [U] uk   /ˌpʌl.mə.nər.i əˈtriː.ʃə/ us    /ˈpʊl.məˌner.i əˈtriː.ʃə/ specialized
a congenital disorder in which the pulmonary valve (= a valve in the heart) closes so that blood does not flow from the heart to the lungs
(Definition of pulmonary atresia from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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