Low concentrations of HDL (below 40 mg/dL for men, below 50 mg/dL for women) increase the risk for atherosclerotic diseases. Data from the landmark Framingham Heart Study showed that, for a given level of LDL, the risk of heart disease increases 10-fold as the HDL varies from high to low.
evacuation. 1  the act or process of evacuating, or the condition of being evacuated; discharge or expulsion, as of contents. 2  Physiology. discharge, as of waste matter through the excretory passages, especially from the bowels. 3  something evacuated or discharged. 4  the removal of persons or things from an endangered area.
â¢ RETREAT (noun) The noun RETREAT has 6 senses: 1. (military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat. 2. a place of privacy; a place affording peace and quiet. 3. (military) a signal to begin a withdrawal from a dangerous position.