Meaning & Definition of Thermal in English

1. Rising current of warm air

1. Relating to or associated with heat

• "Thermal movements of molecules"

• "Thermal capacity"

• "Thermic energy"

• "The caloric effect of sunlight"

2. Of or relating to a hot spring

• "Thermal water"

3. Caused by or designed to retain heat

• "A thermal burn"

• "Thermal underwear"