Sinus of Valsalva

[sahy-nuhs uhv val-sal-vuh]

Si·nus of Val·sal·va

[sahy-nuhs uhv val-sal-vuh]
noun Anatomy.
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.

Origin:
see Valsalva maneuver
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Sinus of Valsalva is always a great word to know.
So is Achilles tendon. Does it mean:
a cord connecting the embryo or fetus with the placenta of the mother and transporting nourishment from the mother and wastes from the fetus
the tendon joining the calf muscles to the heel bone
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