[bahy-op-see] Medicine/Medical.
noun, plural biopsies.
the removal for diagnostic study of a piece of tissue from a living body.
a specimen obtained from a biopsy.
verb (used with object), biopsied, biopsying.
to remove (living tissue) for diagnostic evaluation.

1890–95; bi-2 + -opsy1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
biopsy (ˈbaɪɒpsɪ)
n , pl -sies
1.  examination, esp under a microscope, of tissue from a living body to determine the cause or extent of a disease
2.  the sample taken for such an examination
[C20: from bio- + Greek opsis sight]

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

1895, from Fr. biopsie, coined by Fr. dermatologist Ernest Besnier (1831-1909) from Gk. bi- comb. form of bios "life" (see bio-) + opsis "a sight" (see eye).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

biopsy bi·op·sy (bī'ŏp'sē)

  1. The removal and examination of a sample of tissue from a living body for diagnostic purposes.

  2. A specimen so obtained.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
biopsy   (bī'ŏp'sē)  Pronunciation Key 
A sample of tissue removed from a living body by a medical provider for diagnostic purposes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
My biopsy involved what can only be described as medieval instruments of
If the result is four nanograms per millilitre or above, doctors often
  recommend a biopsy.
Days later, a biopsy revealed a fast-growing cancer in her body.
We use samples from excess lung tissue of human origin, biopsy specimens, and
  tissues from donors.
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