1. [verb] To grant citizenship to someone not born a citizen
2. [verb] To acclimatize an animal or plant
3. [verb] To make natural
4. [verb] To limit explanations of a phenomenon to naturalistic ones and exclude supernatural ones
5. [verb] (linguistics) To make (a word) a natural part of the language.
6. [verb] Make into a citizen; 'The French family was naturalized last year'.
7. [verb] Explain with reference to nature.
8. [verb] Adopt to another place; 'The stories had become naturalized into an American setting'.
9. [verb] Make more natural or lifelike.
10. [verb] Adapt (a wild plant or unclaimed land) to the environment; 'domesticate oats'; 'tame the soil'.