# thermally

/θˈɜːməli/ (UK) · CEFR C1 · Adverb

Source: https://englishreference.com/word/thermally
Updated: 2026-10-13

## Definition

in a way connected to heat or temperature. You use it to describe how something handles warmth, cold, or insulation.

For teachers: relating to heat or temperature, especially concerning conduction, insulation, or response to heating.

## Examples

- This jacket keeps you thermally warm in winter.
- The new windows insulate the house thermally, so heating bills stay low all winter.
- The ceramic tiles shield the spacecraft thermally during re-entry, dispersing extreme heat before it reaches the hull.

## Usage notes

- Typically placed before the adjective or past participle it modifies, as in 'thermally stable'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.