noun
( medical ) a condition in which a baby is born with a problem with the wall dividing the parts of its heart, so that it does not get enough oxygen in its blood
noun
( medical ) a condition in which a baby is born with a problem with the wall dividing the parts of its heart, so that it does not get enough oxygen in its blood
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005