thermal
adjective(ther-mal)
relating to or associated with heat
Examples:
Thermal movements of molecules.
Thermal capacity.
thermal
adjective(ther-mal)
caused by or designed to retain heat
Examples:
A thermal burn.
Thermal underwear.
thermal
noun(ther-mal)
rising current of warm air
thermal
(ther-mal)
of or relating to a hot spring
Examples:
Thermal water.