Pronunciation: (u-kwīur'),[key] —v.t.,-quired, -quir•ing. 1. to come into possession or ownership of; get as one's own: to acquire property. 2. to gain for oneself through one's actions or efforts: to acquire learning. 3. Ling.to achieve native or nativelike command of (a language or a linguistic rule or element).
4. Mil.to locate and track (a moving target) with a detector, as radar.