calefaction

noun

cal·​e·​fac·​tion

¦kalə¦fakshən

plural -s

1

: warming

2

: the state of being warmed

Word History

Etymology

Medieval Latin calefaction-, calefactio, from Latin calefactus (past participle of calefacere) + -ion-, -io -ion

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