therm Hear it!

therm definition

therm (t̸hʉrm)

noun

  1. Obsolete
    1. a great calorie
    2. a small calorie
    3. a unit of heat equal to 1,000 great calories
  2. a unit of heat equal to 100,000 British thermal units

Etymology: < Gr thermē, heat: see warm

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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