Webster's Revised Unabridged Dictionary · 1913

Naturalize

Naturalize (?; 135) , transitive verb

[Compare French naturaliser. See Natural.]

1.
To make natural; as, custom naturalizes labor or study.
2.
To confer the rights and privileges of a native subject or citizen on; to make as if native; to adopt, as a foreigner into a nation or state, and place in the condition of a native subject.
3.
To receive or adopt as native, natural, or vernacular; to make one's own; as, to naturalize foreign words.
4.
To adapt; to accustom; to habituate; to acclimate; to cause to grow as under natural conditions.
Its wearer suggested that pears and peaches might yet be naturalized in the New England climate. — Hawthorne

Naturalize , intransitive verb

1.
To become as if native.
2.
To explain phenomena by natural agencies or laws, to the exclusion of the supernatural.
Infected by this naturalizing tendency. — H. Bushnell