Sinus of Valsalva: Meaning and Definition of

Si•nus of Val•sal•va

Pronunciation: (sī'nus uv val-sal'vu), [key]
— Anat. Anat.
  1. any of the pouches of the aorta and the pulmonary artery opposite the flaps of the semilunar valves into which blood returning to the heart flows, closing the valves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.