Defense Health Agency. The Defense Health Agency (DHA) is a joint, integrated Combat Support Agency that enables the U.S Army, U.S Navy, and U.S Air Force medical services to provide a medically ready force and ready medical force to Combatant Commands in both peacetime and wartime.
Definition of preemption. 1a : the right of purchasing before others; especially : one given by the government to the actual settler upon a tract of public landb : the purchase of something under this right.
From Longman Dictionary of Contemporary English presumption preâ§sumpâ§tion / prÉªËzÊmpÊ É n / AWL noun 1 [countable] THINK SO/NOT BE SURE something that you think is true because it is very likely presumption that the presumption that their wealth is the result of crime on the presumption that On the presumption that the doctor knows best, I took the medicine. 2 [countable, uncountable] law THINK SO/NOT BE SURE the act of thinking something is true, bad, or good until it is shown to ...