Dictionary
ther•mal
Pronunciation: (thûr'mul), [key]—
adj.
1. Also,thermic.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. Meteorol.a rising air current caused by heating from the underlying surface, esp. such a current when not producing a cloud.
2. thermals.See
thermal underwear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.