white rat


noun
  1. an albino variety of the Norway rat, Rattus norvegicus, used in biological experiments.

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British Dictionary definitions for white rat

white rat

noun
  1. a white variety of the brown rat (Rattus norvegicus), used extensively in scientific research

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012