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[nach-er-uh-lahyz, nach-ruh-] /ˈnætʃ ər əˌlaɪz, ˈnætʃ rə-/
verb (used with object), naturalized, naturalizing.
to confer upon (an alien) the rights and privileges of a citizen.
to introduce (organisms) into a region and cause them to flourish as if native.
to introduce or adopt (foreign practices, words, etc.) into a country or into general use:
to naturalize a French phrase.
to bring into conformity with nature.
to regard or explain as natural rather than supernatural:
to naturalize miracles.
to adapt or accustom to a place or to new surroundings.
verb (used without object), naturalized, naturalizing.
to become naturalized.
to adapt as if native to a new environment, set of circumstances, etc.
to study or carry on research in natural history.
Also, especially British, naturalise.
1585-95; natural + -ize
Related forms
naturalization, noun
naturalizer, noun
unnaturalize, verb (used with object), unnaturalized, unnaturalizing. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for naturalized
  • The world about us has been naturalized by science and reason and so too has our brains.
  • Citizenship should be a vote of commitment to a nation, not a ticket of convenience from it for naturalized citizens.
  • Born to military parents, he is considered naturalized.
  • But not that many people are doing more naturalized, or more serious, light painting.
  • The time it takes to be naturalized varies by location.
  • These data measure the proportion of the foreign born population at a point in time that is naturalized.
British Dictionary definitions for naturalized


/ˈnætʃrəˌlaɪz; -tʃərə-/
(transitive) to give citizenship to (a person of foreign birth)
to be or cause to be adopted in another place, as a word, custom, etc
(transitive) to introduce (a plant or animal from another region) and cause it to adapt to local conditions
(intransitive) (of a plant or animal) to adapt successfully to a foreign environment and spread there
(transitive) to explain (something unusual) with reference to nature, excluding the supernatural
(transitive) to make natural or more lifelike
Derived Forms
naturalization, naturalisation, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for naturalized



"admit (an alien) to rights of a citizen," 1550s (implied in naturalized), from natural (adj.) in its etymological sense of "by birth" + -ize; in some instances from Middle French naturaliser, from natural. Of things, from 1620s; of plants or animals, from 1796. Related: Naturalizing.

Online Etymology Dictionary, © 2010 Douglas Harper
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naturalized in Science
To establish a nonnative species in a region where it is able to reproduce successfully and live alongside native species in the wild. Naturalized species may be introduced intentionally or unintentionally. Eucalyptus trees are native to Australia but have become naturalized in many other parts of the world.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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