sinuatrial


sin·u·a·tri·al (S-A, SA),

(sin'yū-ā'trē-ăl), Relating to the sinus venosus and the right atrium of the heart. Synonym(s): sinoatrial

sin·u·a·tri·al

(SA) (sin'yū-ā'trē-ăl) Relating to the sinus venosus of the embryo, or the sinus of the venae cavae of the mature heart, and the right atrium.
Synonym(s): sinoatrial.