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B.T.U.

 
Use BTU in a Sentence
Physics.
British thermal unit; British thermal units.
Also, BTU, B.t.u., B.th.u., Btu
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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British thermal unit  
n.   Abbr. BTU or Btu
  1. The quantity of heat required to raise the temperature of one pound of water from 60° to 61°F at a constant pressure of one atmosphere.
  2. The quantity of heat equal to 1/180 of the heat required to raise the temperature of one pound of water from 32° to 212°F at a constant pressure of one atmosphere.
BTU or Btu  
abbr.  British thermal unit
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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Main Entry: Btu
Function: abbreviation
British thermal unit
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Btu abbr.
British thermal unit

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Btu  
Abbreviation of British thermal unit
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Btu
British thermal unit
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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