What is the meaning of Thermal?
Pertaining to heat or temperature.
Providing efficient insulation so as to keep the body warm.
Caused or brought about by heat.
Having a rough finish from treatment with a blowtorch.
A column of rising air in the lower atmosphere created by uneven heating of a planet's surface.
To create a rough finish on stone by treating it with a high-temperature blowtorch.
To fly an unpowered aircraft in a thermal (column of rising air).
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