Origin and Etymology of atrioventricular
New Latin atrium + English ventricular
First Known Use: circa 1860
Medical Definition of atrioventricular
1: of, relating to, or situated between an atrium and ventricle
2: of, involving, or being the atrioventricular node
Seen and Heard
What made you want to look up atrioventricular? Please tell us where you read or heard it (including the quote, if possible).