aeration

noun

aer·​a·​tion ˌer-ˈā-shən 

plural -s

1

: the act or process of aerating or the state of being aerated : exposure to air

2

: the process of discharging hot milk or cream through one or more vacuum chambers of a vacuum pasteurizer for elimination of undesirable flavors followed by passage over a surface cooler

Word History

Etymology

aer(ate) + -ation

First Known Use

1799, in the meaning defined at sense 1

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now