Pasteur

American  

[pa-stur, pah-stœr] / pæˈstɜr, pɑˈstœr /

noun

1. Louis 1822–95, French chemist and bacteriologist.

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Pasteur British  

/ pastœr /

noun

1. Louis (lwi). 1822–95, French chemist and bacteriologist. His discovery that the fermentation of milk and alcohol was caused by microorganisms resulted in the process of pasteurization. He also devised methods of immunization against anthrax and rabies and pioneered stereochemistry

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Pasteur Scientific  

/ păs-tûr′ /

1. French chemist who founded modern microbiology. His early work with fermentation led him to invent the process of pasteurization. Pasteur established that microorganisms cause communicable diseases and infections.

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Other Word Forms

Derived Forms

• Pasteurian
  adjective

Example Sentences

The WHO said they were in a stable condition and tests were being sent to the Institut Pasteur in Dakar.

From Barron's • May 5, 2026

Bioinformatic analysis by collaborator Daniela Megrian from the Institut Pasteur in Montevideo, Uruguay, helped clarify how the CorMR system came to be.

From Science Daily • Apr. 20, 2026

And Iran reported major damage to a century-old medical research center, the Pasteur Institute.

From Barron's • Apr. 2, 2026

Researchers from the Institut Pasteur and Inserm have found that when mother mice consume dietary emulsifiers, it can negatively affect the gut microbiota of their offspring.

From Science Daily • Dec. 26, 2025

The 1880s saw two scientists, France’s Louis Pasteur and Germany’s Robert Koch, isolate various bacteria—extremely small one-celled creatures—living in animals and humans and link them to specific diseases.

From "An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793" by Jim Murphy