pasteurize

1 of 2

verb

pas·​teur·​ize ˈpas-chə-ˌrīz  ˈpas-tyə-  -tə- 

pasteurized; pasteurizing

transitive verb

: to subject to pasteurization

pasteurizer noun

pasteurizer

2 of 2

noun

pas·​teur·​iz·​er

variants also British pasteuriser

-zə(r)

plural -s

: one that pasteurizes: such as

a

: an apparatus for pasteurizing fluids

b

: a worker who does pasteurizing

Examples of pasteurize in a Sentence

Recent Examples on the Web

Verb

Unlike shell-in eggs, all commercial egg products, such as liquid, frozen, or dried eggs, must be pasteurized. — Amy Brownstein, Verywell Health, 23 July 2026

Raw milk has not been pasteurized, which means it has not been heated to kill microorganisms. — Lauren Manaker Ms, Health, 23 July 2026

The mother’s job is done, and in order to make the product shelf-stable and safe, it’s poured into bottles, sealed and pasteurized. — Sean Timberlake, Sacbee.com, 8 July 2026

By definition, it has not been pasteurized, the simple process of heating milk to kill off harmful bacteria. — CNN Money, 14 June 2026

Word History

Etymology

Verb

Louis Pasteur

First Known Use

Verb

1881, in the meaning defined above

Rhymes for pasteurize

• advertise
• aggrandize
• alibis
• alkalies
• alkalis
• amortize
• amplifies
• analyse
• analyze
• anywise
• authorize
• butterflies

Kids Definition

pasteurize

verb

pas·​teur·​ize ˈpas-chə-ˌrīz  ˈpas-tə- 

pasteurized; pasteurizing

: to expose to pasteurization

pasteurizer noun

Etymology

Verb

named for Louis Pasteur 1822–1895 French chemist

Medical Definition

pasteurize

transitive verb

pas·​teur·​ize

variants also British pasteurise

ˈpas-chə-ˌrīz  ˈpas-tə- 

pasteurized also British pasteurised; pasteurizing also British pasteurising

: to subject to pasteurization

pasteurizer noun

also British pasteuriser