房ぼう室しつ中ちゅう隔かくMeanings1nounatrioventricular septumanatomy›Anatomical term for the wall separating the atria and ventricles in the heart.房ぼう室しつ中ちゅう隔かくは心しん臓ぞうの心しん房ぼうと心しん室しつを隔へだてる壁かべです。The atrioventricular septum is the wall that separates the atria and ventricles of the heart.