Dictionary
a•tri•o•ven•tric•u•lar
Pronunciation: (ā"trē-ō-ven-trik'yu-lur), [key]—
adj. Anat.
of or pertaining to the atria and ventricles of the heart.
Abbr.: AV, A-V
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.