[myoor-ahyn, -in]
belonging or pertaining to the Muridae, the family of rodents that includes the mice and rats.
a murine rodent.

1600–10; < Latin mūrīnus of mice, equivalent to mūr- (stem of mūs) mouse + -īnus -ine1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
murine (ˈmjʊəraɪn, -rɪn)
1.  of, relating to, or belonging to the Muridae, an Old World family of rodents, typically having long hairless tails: includes rats and mice
2.  resembling a mouse or rat
3.  any animal belonging to the Muridae
[C17: from Latin mūrīnus of mice, from mūsmouse]

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

c.1600, from L. murinus, from mus "mouse" (see mouse).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

murine mu·rine (myur'īn')
Of, relating to, or transmitted by a member of the rodent family Muridae, including rats and mice.

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
murine   (myr'īn')  Pronunciation Key 
  1. Of or relating to a rodent of the family Muridae or subfamily Murinae, including rats and mice.

  2. Caused, transmitted, or affected by such a rodent.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for murine
There are several other murine genera that are sometimes considered part of rattus.
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