To reduce to a state of nature: identify with, or make a part of, nature.To make natural; render easy and familiar by custom and habit.To confer the rights and privileges of a natural subject or citizen upon; receive under sanction and form of law as a citizen or subject. See naturalization.To receive or adopt as native, natural, or vernacular; incorporate into ormake part and parcel of a language; receive into the original or common stock: as, to naturalize a foreign word or expression.So to adapt to new conditions of life that those conditions shall appear to be native to the person or thing naturalized; to introduce and acclimatize or cause to thrive as if indigenous: as, to naturalize a foreign plant or animal.In musical notation, to apply a natural or cancel (♮) to.To explain phenomena by natural laws, to the exclusion of the supernatural.To become like a native.To become a citizen of another than one's native country. Also spelled naturalise.