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Definition of passivate - 2 dictionary results

pas⋅si⋅vate

[pas-uh-veyt]
–verb (used with object), -vat⋅ed, -vat⋅ing. Metallurgy.
to treat (a metal) to render the surface less reactive chemically.

Origin:
1910–15; passive + -ate 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pas·si·vate   (pās'ə-vāt')   
v.   pas·si·vat·ed, pas·si·vat·ing, pas·si·vates

v.   tr.
  1. To treat or coat (a metal) in order to reduce the chemical reactivity of its surface.

  2. To coat (a semiconductor, for example) with an oxide layer to protect against contamination and increase electrical stability.

pas'si·va'tion n., pas'si·va·tor n.
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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