Diffusing Capacity. 1  Diseases associated with increased pulmonary blood flow (e.g., left-to-right intracardiac shunts) 2  Diseases associated with polycythemia. 3  Exercise. 4  Pulmonary hemorrhage. 5  DLCO, diffusing capacity of carbon monoxide.
arrow - a projectile with a straight thin shaft and an arrowhead on one end and stabilizing vanes on the other; intended to be shot from a bow arrowhead - the pointed head or striking tip of an arrow bow and arrow - a weapon consisting of arrows and the bow to shoot them
Definition of arrowhead. 1  1 : a wedge-shaped piercing tip usually fixed to an arrow. 2  2 : something resembling an arrowhead. 3  3 : any of a genus (Sagittaria) of marsh or aquatic plants of the water-plantain family with leaves shaped like arrowheads.