Theatrical term for thermal energy (4)
I believe the answer is:
heat
'energy' is the definition.
(heat energy is a kind of energy)
'theatrical term for thermal' is the wordplay.
'HEAT' is hidden within the letters.
But, I am uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for heat that I've seen before include "Raise temperature" , "Warm up" , "Energy that causes a rise in temperature" , "It's measured in therms" , "Pressure" .)