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Meaning of thermal

ther•mal

Pronunciation: (thûr'mul), [key]
— adj.
  1. of, pertaining to, or caused by heat or temperature: thermal capacity.
  2. of, pertaining to, or of the nature of thermae: thermal waters.
  3. designed to aid in or promote the retention of body heat: a thermal blanket.
—n.
  1. a rising air current caused by heating from the underlying surface, esp. such a current when not producing a cloud.
  2. See
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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