How to spell thermal

hear itther·mal/'θɜrmæl/adjectiveSchwa and roots

What it means: Relating to or associated with heat.

In a sentence: The thermal blanket keeps us warm in the winter.

The part people get wrong

Often misspelled as thermo or thermell.

Same family: thermometer, thermostat, geothermal, hypothermia, thermalize. If you can spell one, the shared part carries to the others.

Where it comes from: “Thermal” comes from the Greek word “thermos,” meaning “hot” or “warm.” You can see the same root in words like “thermometer” (a device that measures heat) and “thermos,” the brand name that became a common word for an insulated bottle.

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Words like this

geothermal · hypothermia · verdict · marital · interest rate · hilarious · permanent · therapy

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