convection
kun-VEK-shun
kənˈvɛkʃən
The transfer of heat through the movement of a fluid (liquid or gas), such as air in an oven.
Usually refers to ovens that use fans to circulate hot air for faster, more even cooking.
The story behind the word. From 'com-' (together) and 'vehere' (to carry). It describes how heat is 'carried along' by the moving air or water.
Commonly confused with
- conduction: Convection is heat transfer by moving air/liquid; conduction is heat transfer by direct touch.
Word family
- convect (verb): To move by convection.
- convectional (adjective): Relating to convection.
Collocations
- convection oven
- convection current
- natural convection
Example sentences
- "Convection ovens use a fan to circulate hot air, which cooks food about 25% faster." Appliance manual
- "When using the convection setting, you should lower the temperature by 25 degrees." Cooking tip
Memory hook
CONVECTION uses a fan to CONVEY (carry) heat. Carried by air.
When not to use
Do not confuse with 'conduction' (direct contact) or 'radiation' (waves).
Fun facts
- Convection is why the wind feels colder than still air at the same temperature (wind chill).
Explore more words
Evaporation, current, Heat, Condensation, aeration, reduction
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