The passage of blood from the right side of the heart into the left, as through a septal defect.
The passage of blood from the pulmonary artery into the aorta, as through a patent ductus arteriosus.
Why Do “Left” And “Right” Mean Liberal And Conservative?During election seasons the words left and right denote political affiliation more than spatial direction. But where do these associations come from? The left hand has long been associated with deviance. The word “sinister” originally meant “to the left” in Latin. The word “left” comes from the Old English word lyft, which literally meant “weak, foolish.” To avoid the negative and superstitious associations of the …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.