1 AFib reduces the ability of the atria to pump blood into the ventricles, and usually causes the heart to beat too rapidly. 2  One-half million new cases of atrial fibrillation are diagnosed every year in the U.S., and billions of dollars are spent annually on its diagnosis and treatment.
noun, (used with a singular verb) 1. the branch of mechanics that deals with the motion of air and other gases and with the effects of such motion on bodies in the medium. Compare aerostatics (def 1). Origin of aerodynamics.
an aerodynamic shape or design allows a plane, car etc to move through the air in a smooth and fast way Synonyms and related words Words used to describe the shape of objects: aerodynamic, angular, as flat as a pancake... Explore Thesaurus This is the British English definition of aerodynamic.