A thermal column (or thermal) is a rising mass of buoyant air, a convective current in the atmosphere, that transfers heat energy vertically. [1] Thermals are created by the uneven heating of Earth's surface from solar radiation, and are an example of convection, specifically atmospheric convection.
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The meaning of THERMAL is of, relating to, or caused by heat. How to use thermal in a sentence. Did you know?

A thermal is a movement of rising warm air. Birds use thermals to lift them through the air. Collins COBUILD Advanced Learners Dictionary. Copyright HarperCollins Publishers

Define thermal. thermal synonyms, thermal pronunciation, thermal translation, English dictionary definition of thermal. adj. 1. Of, relating to, using, producing, or caused by heat.
Caused or brought about by heat. (stone) Having a rough finish from treatment with a blowtorch. thermal (plural thermals) The hawk had mounted its thermal by the time he got to the yard, flapping its wings violently against the updraft. (military) FLIR.
Thermal energy, also known as heat energy, is responsible for the warmth we experience every day. From a more technical perspective, it is the energy stored in an object's particles.