naturalize, naturalise -- (make into a citizen; "The French family was naturalized last year")
naturalize -- (explain with reference to nature)
naturalize, naturalise -- (adopt to another place; "The stories had become naturalized into an American setting")
naturalize, naturalise -- (make more natural or lifelike)
domesticate, cultivate, naturalize, naturalise, tame -- (adapt (a wild plant or unclaimed land) to the environment; "domesticate oats"; "tame the soil")