thermal radiation

noun Thermodynamics.

electromagnetic radiation emitted by all matter above a temperature of absolute zero because of the thermal motion of atomic particles.

Nearby words

  1. thermal neutron analyzer,
  2. thermal neutrons,
  3. thermal noise,
  4. thermal pollution,
  5. thermal printer,
  6. thermal reactor,
  7. thermal shock,
  8. thermal spring,
  9. thermal underwear,
  10. thermal unit

Origin of thermal radiation

First recorded in 1930–35 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019