MB

1.
Manitoba, Canada (approved for postal use).
2.
Computers. megabyte; megabytes.
Dictionary.com Unabridged

Mb

Computers.
megabit; megabits.

mb

Physics.
1.
millibar; millibars.
2.
millibarn; millibarns.

M.B.

Chiefly British.
Bachelor of Medicine.

Origin:
< Neo-Latin Medicinae Baccalaureus

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
mb
 
symbol for
millibar

Mb
 
abbreviation for
megabyte

MB
 
abbreviation for
1.  Bachelor of Medicine
2.  maternity benefit
3.  (esp in postal addresses) Manitoba
4.  (in Canada) Medal of Bravery

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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American Heritage
Medical Dictionary

Mb abbr.
myoglobin

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
mb  
Abbreviation of millibar
Mb  
Abbreviation of megabit
MB  
Abbreviation of megabyte
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

MB definition

unit
(Or "Mb") megabytes or megabits. When referring to the size or data transfer rate of a storage device which is accessed in multiples of eight bits (e.g. RAM, hard disk) this almost certainly means megabytes, but when referring to the data transfer rate of a communications system it probably means megabits. Some years ago, it is claimed, "MB" always meant megabytes and "Mb" meant megabits but recently this useful distinction has been lost.
(1996-09-22)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
mb
millibar
Mb
megabit
MB
  1. Manitoba

  2. Latin Medicinae Baccalaureus (Bachelor of Medicine)

  3. megabyte

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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Example sentences for MB
Duck mountain provincial park baldy mountain highest elevation in mb.
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