To release from restraint or inhibition.
To release from chemical bonds or solutions.
To acquire from an enemy during wartime, used especially of cities, regions, and other population centers.
To release from servitude or unjust rule.
To release from slavery: to manumit.
To acquire from another by theft or force: to steal, to rob.
To acclimatize an animal or plant.
To make (a word) a natural part of the language, using the native homologue of each phoneme (and often for each morpheme) of the imported word (e.g., native inflections).
To study nature.
To limit explanations of a phenomenon to naturalistic ones and exclude supernatural ones.
To grant citizenship to someone not born a citizen.
To make natural