Hypertext Webster Gateway: "thermal"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Thermal \Ther"mal\, a. [L. thermae hot springs, fr. Gr. ?, pl.
of ? heat, fr. ? hot, warm, ? to warm, make hot; perhaps akin
to L. formus warm, and E. forceps.]
Of or pertaining to heat; warm; hot; as, the thermal unit;
thermal waters.
The thermal condition of the earth. --J. D.
Forbes.
{Thermal conductivity}, {Thermal spectrum}. See under
{Conductivity}, and {Spectrum}.
{Thermal unit} (Physics), a unit chosen for the comparison or
calculation of quantities of heat. The unit most commonly
employed is the amount of heat necessary to raise the
temperature of one gram or one pound of water from zero to
one degree Centigrade. See {Calorie}, and under {Unit}.
From WordNet (r) 1.7 (wn)
thermal
adj 1: relating to or associated with heat; "thermal movements of
molecules"; "thermal capacity"; "thermic energy"; "the
caloric effect of sunlight" [syn: {thermic}, {caloric}]
[ant: {nonthermal}]
2: caused by or designed to retain heat; "thermal springs"; "a
thermal burn"; "thermal underwear"
n : rising current of warm air
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