thermal

Adjective

• caused by or designed to retain heat
  • a thermal burn
    
  • thermal underwear
    

• of or relating to a hot spring
  • thermal water
    

• relating to or associated with heat
  • thermal movements of molecules
    
  • thermal capacity
    
  • thermic energy
    
  • the caloric effect of sunlight
    

Noun

• rising current of warm air

Related words

• Synonyms: 
  thermic , caloric