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white rat

American  

noun

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


white rat British  

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“America is like a white rat with red eyes.”

From Washington Post Jan. 27, 2023

"When I was a youngster, somebody gave me a white rat as a pet," Baker said.

From Fox News Mar. 8, 2022

Without it, it’s hard to imagine how he ever would’ve climbed on that giant white rat, which here we are still talking about nearly half a century later.

From Los Angeles Times Sep. 6, 2018

And, of course, she had her animals for company: a Javanese monkey who got into all sorts of trouble, multiple dogs and a white rat.

From New York Times Oct. 2, 2017

The garbage shuddered and gave way to a dingy white rat: sharp red eyes, a pink tail, back paw missing two toes.

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman

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