In medical jurisprudence. Want of breath; difficulty in breathing; partial or temporary suspension of respiration ; specifically, such difficulty of respiration resulting from over-oxygenation of the blood, and in this distinguished from “asphyxia,” which is a condition resulting from a deficiency of oxygen in the blood due to suffocation or any serious interference with normal respiration. The two terms were formerly (but improperly) used synonymously.

Latin and means more effective or with greater reason.