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mad cow disease

American  
mad cow disease British  

noun

  1. an informal name for BSE

"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

mad cow disease Scientific  
/ măd /
  1. A degenerative neurologic disease of cattle, thought to be caused by infection-causing agents called prions, in which brain tissues deteriorate and take on a spongy appearance, resulting in abnormal behaviors and loss of muscle control. A variant form of Creutzfeldt-Jakob disease is transmitted to humans through the eating of infected cattle tissue.

  2. Also called bovine spongiform encephalopathy


mad cow disease Cultural  
  1. A lethal disease that originates in cows and can spread to humans through consumption of affected neural tissue. It is called Jakob-Creutzfeldt disease in humans. It causes the brain to deteriorate through the instrument of an infectious protein called a prion.


Etymology

Origin of mad cow disease

1985–90

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:

She says the outbreak of BSE, or mad cow disease, that affected beef in the 1990s was more worrying because it could affect humans.

From BBC Apr. 5, 2026

In the 1980s, concerns about bovine spongiform encephalopathy — or mad cow disease — took hold across Europe, when cases of the incurable and invariably fatal neurodegenerative disease of cattle began to appear.

From Los Angeles Times Apr. 18, 2024

China also recently ended a ban on Brazilian beef imposed in February after the discovery of an atypical case of mad cow disease.

From Washington Times Apr. 13, 2023

Thanks to that and other scares, such as the outbreak of "mad cow" disease on beef farms in the 1990s, the public perception of intensively farmed food shifted from safe to risky.

From Salon Mar. 14, 2023

Then people in England began dying of a sickness called mad cow disease.

From "The Omnivore's Dilemma" by Michael Pollan

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