Meaning & use
thermal
Relating to heat, or designed to retain warmth.
See it in a sentence
She wore thermal underwear to stay warm during the winter hike.
Thermal cameras can detect body heat even in complete darkness.
A note on using this word
As a noun, "a thermal" is a rising current of warm air used by gliders and birds to gain height.
Words with a similar meaning
This term is best learned through its definition and examples.
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. noun
A rising current of warm air that gliders, birds, or balloons can use to gain altitude.
The eagle circled slowly, riding a thermal high above the valley.
Make it your own
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