11 Trending Words of 2014


[pa-stur; French pah-stœr] /pæˈstɜr; French pɑˈstœr/
[loo-ee;; French lwee] /ˈlu i;; French lwi/ (Show IPA),
1822–95, French chemist and bacteriologist.
Related forms
Pasteurian, adjective Unabridged
Cite This Source
British Dictionary definitions for l. pasteur


/French pastœr/
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Cite This Source
l. pasteur in Medicine

Pasteur Pas·teur (pās-tûr', pä-stɶr'), Louis. 1822-1895.

French chemist who founded modern microbiology, invented pasteurization, and developed vaccines for anthrax, rabies, and chicken cholera.

The American Heritage® Stedman's Medical Dictionary
Cite This Source
l. pasteur in Science
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.

Our Living Language  : Through his experiments with bacteria in the 1860s, French chemist Louis Pasteur disproved the centuries-old belief that disease was caused by spontaneous generation, the idea that disease-causing parasites arise spontaneously in an organism. Pasteur demonstrated that the fermentation of wine to vinegar was caused by living agents that entered the wine from the air surrounding it, proving instead that microorganisms were able to reproduce. Drawing the conclusion that airborne agents could enter the bodies of humans and animals and cause disease, he then devoted his research to isolating the organisms that cause specific diseases and finding treatments to prevent them. He developed vaccines for anthrax, chicken cholera, and rabies. Pasteur's germ theory of disease was not immediately accepted, but thanks to the work of other pioneering scientists, such as Robert Koch, it eventually provided the foundation for modern branches of medicine such as microbiology, bacteriology, virology, and immunology. Pasteur is also known for developing pasteurization (originally for wine), a process of heating and rapidly cooling liquids that is used to kill disease-causing bacteria, particularly in dairy products.
The American Heritage® Science Dictionary
Cite This Source

Word of the Day

Difficulty index for Pasteur

Some English speakers likely know this word

Word Value for l

Scrabble Words With Friends

Nearby words for l. pasteur