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metaplasia

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Metaplasia
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met⋅a⋅pla⋅sia

  [met-uh-pley-zhuh, -zhee-uh]
Use metaplasia in a Sentence
–noun Pathology.
the transformation of one type of tissue into another.
Origin:
1885–90; meta- + -plasia

Related forms:
met⋅a⋅plas⋅tic  [met-uh-plas-tik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Metaplasia
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met·a·pla·sia   (mět'ə-plā'zhə, -zhē-ə)   
n.  

  1. Normal transformation of tissue from one type to another, as in the ossification of cartilage to form bone.

  2. Transformation of cells from a normal to an abnormal state.

met'a·plas'tic (-plās'tĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: meta·pla·sia
Pronunciation: "met-&-'plA-zh(E-)&
Function: noun
1 : transformation of one tissue into another<metaplasia of cartilage into bone>
2 : abnormal replacement of cells of one type by cells of another
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

metaplasia met·a·pla·sia (mět'ə-plā'zhə, -zhē-ə)
n.

  1. Normal transformation of tissue from one type to another, as in the ossification of cartilage to form bone.

  2. Transformation of cells from a normal to an abnormal state.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia

metaplasia

in zoology, the conversion of one type of living cell or group of cells into another as a means of regeneration. For example, the damaged or removed lens of a salamander eye is replaced through the transformation of nearby pigmented iris cells into lens cells. The regeneration of brain tissue from epidermis in annelid worms is another well-documented example of metaplasia. The term metaplasia also refers to the abnormal replacement of cells of one type by those of another type.

Learn more about metaplasia with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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