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ther·mal

thermal

 
 
pronunciation:
thur ml
features:
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part of speech: adjective
definition 1: using, resulting from, or producing heat.
Thermal currents in the air lifted the hawk higher and higher.
definition 2: made to hold in heat.
Skiers wear thermal underwear to stay warm.
derivation: thermally (adv.)
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The word thermal contains the following parts:
therm, thermo Greek root that means heat, temperature