[nach-er-uh-lahyz, nach-ruh-]
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

naturalization, noun
naturalizer, noun
unnaturalize, verb (used with object), unnaturalized, unnaturalizing. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
naturalize or naturalise (ˈnætʃrəˌlaɪz, -tʃərə-, ˈnætʃrəˌlaɪz, -tʃərə-)
1.  (tr) to give citizenship to (a person of foreign birth)
2.  to be or cause to be adopted in another place, as a word, custom, etc
3.  (tr) to introduce (a plant or animal from another region) and cause it to adapt to local conditions
4.  (intr) (of a plant or animal) to adapt successfully to a foreign environment and spread there
5.  (tr) to explain (something unusual) with reference to nature, excluding the supernatural
6.  (tr) to make natural or more lifelike
naturalise or naturalise
naturali'zation or naturalise
naturali'sation or naturalise

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

"admit (an alien) to rights of a citizen," 1559 (implied in naturalized), from natural (q.v.) in its etymological sense of "by birth."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
naturalize   (nāch'ər-ə-līz')  Pronunciation Key 
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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