To deracinate someone is to force them to move away from their native home to a new, unfamiliar place. Civil wars often deracinate large segments of a country's population.
Deracinate comes from the Old French desraciner, "pull up by the roots." When you deracinate people, they're figuratively pulled up by the roots, usually with the intention of "planting" them in a new location. Historically, U.S. policies deracinated Native American tribes, relocating them to reservations. In 2005, Hurricane Katrina deracinated many people whose neighborhoods became unlivable. You can also use this verb more literally: "I'm going to deracinate that lavender plant and put it in a sunnier spot."