What does thermally mean?
Thermally is an adverb meaning in a way related to heat or temperature. It is commonly used in technical and scientific contexts to describe how something conducts, transfers, retains, or responds to heat. For example, a surface may be thermally insulated, a material may be thermally conductive, or two components may be thermally bonded together. The word is also used in environmental discussions when describing how living organisms respond to temperature changes. Although it resembles an adjective, thermally specifically modifies an action, condition, or relationship. In phrases such as thermally efficient or thermally sensitive, it identifies heat or temperature as the relevant basis of the description. Because many of its common uses involve engineering, physics, climate, or biology, the adverb often carries a specialized or technical register, though it remains fully standard in general English.
adverbIn a way that concerns heat or temperature; with respect to thermal effects.
- In a way that concerns heat, temperature, or the transfer of heat.
"The new coating helps the building retain heat and reduces its energy consumption."
"The engine remains thermally efficient across a wide range of operating temperatures."
"Many species are thermally sensitive and move to cooler areas as the day heats up."
Sometimes one small word carries the whole idea: thermally turns a statement about heat, temperature, or heat transfer into a concise adverb.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of thermally
Thermally was formed in English by adding the adverbial suffix -ly to the adjective thermal. Thermal derives through Latin from Greek roots associated with thermē, meaning heat, and thermos, meaning hot or warm. The same broad root also produced English words such as thermometer, therm, and thermocouple.
How thermally is actually used
The adverb is common in technical, scientific, engineering, and environmental contexts. It is most natural when describing heat transfer, temperature control, insulation, conduction, or the effects of temperature.
Easily confused with thermally
Thermal is an adjective describing something relating to heat or temperature, whereas thermally is the adverb indicating that an action or condition concerns heat or temperature.