Main Entry: un·der·ven·ti·la·tion Pronunciation: "&n-d&r-"ven-ti-'lA-sh&n Function: noun :HYPOVENTILATION
Main Entry: ven·ti·la·tion Pronunciation: "vent-&l-'A-sh&n Function: noun 1: the act or process ofventilating 2: the circulation and exchange of gases in the lungs or gills that is basic to respiration