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

• Pasteurian
  adjective

Example Sentences

See Examples For:

Pasteur

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

Second, Louis Pasteur advanced the germ theory of disease, which postulated that microbes can cause illness.

From Salon ● Jan. 27, 2025

He had been forged, by that deluded old teacher, into a sort of Pasteur or Curie or patient discoverer of insulin.

From "The Once and Future King" by T. H. White