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Alternative forms[edit]


From Middle French naturaliser. Surface etymology is natural + -ize[1]


  • IPA(key): /ˈnætʃəɹəˌlaɪz/, /ˈnætʃɹəˌlaɪz/


naturalize (third-person singular simple present naturalizes, present participle naturalizing, simple past and past participle naturalized)

  1. To grant citizenship to someone not born a citizen
  2. To acclimatize an animal or plant
    • Hawthorne
      Its wearer suggested that pears and peaches might yet be naturalized in the New England climate.
  3. To make natural
    Custom naturalizes labour or study.
  4. To limit explanations of a phenomenon to naturalistic ones and exclude supernatural ones
  5. (linguistics) To make (a word) a natural part of the language.
    English speakers have naturalized the French word "café".

Usage notes[edit]

In English, foreign words are typically written in italics until they are naturalized.



The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.


  1. ^ "naturalize" in Unabridged. Random House, Inc.