# thermal

> English word · Adjective · IPA /ˈθɜːməl/ · frequency rank #6,749

## Definitions
1. Pertaining to heat or temperature.
2. Providing efficient insulation so as to keep the body warm.
3. Caused or brought about by heat.
4. Having a rough finish from treatment with a blowtorch.

## Etymology
From French thermal, from New Latin *thermalis, from Ancient Greek θέρμη (thérmē, “heat”), from Proto-Indo-European *gʷʰer- (“to heat, warm”).

## Easily confused with
- **Thurman** (https://plainspell.com/en/vs/thermal-vs-thurman)
- **thermos** (https://plainspell.com/en/vs/thermal-vs-thermos)
- **thermally** (https://plainspell.com/en/vs/thermal-vs-thermally)
- **Thelma** (https://plainspell.com/en/vs/thelma-vs-thermal)

## Common misspellings (11)
`htermal`, `tehrmal`, `themral`, `theraml`, `thermall`, `thermla`, `thermmal`, `therrmal`, `thhermal`, `thremal`, `tthermal`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/thermal