thermal
//ˈθɜːməl//
Adjective
thermalCanonical form
1
Relating to or caused by heat.
The thermal energy from the sun heats the water.
2
Designed to retain body heat or provide insulation against cold.
I always wear thermal underwear when I go skiing.
Synonym
Antonym
Noun
thermalSingular
thermalsPlural
1
A rising current of warm air, used by birds and gliders to gain height.
The eagle spread its wings and soared on a thermal.
2
Thermal underwear or clothing designed to keep the body warm.
I always wear thermals when I go skiing in winter.