Thermal
WordNet
adjective
(1) Caused by or designed to retain heat
"A thermal burn"
"Thermal underwear"
(2) Of or relating to a hot spring
"Thermal water"
(3) Relating to or associated with heat
"Thermal movements of molecules"
"Thermal capacity"
"Thermic energy"
"The caloric effect of sunlight"
noun
(4) Rising current of warm air
WiktionaryText
Noun
Adjective
- pertaining to heat or temperature.
- providing efficient insulation so as to keep the body warm.