Hypertext Webster Gateway: "thermochemistry"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Thermochemistry \Ther`mo*chem"is*try\, n. [Thermo- + chemistry.]
That branch of chemical science which includes the
investigation of the various relations existing between
chemical action and that manifestation of force termed heat,
or the determination of the heat evolved by, or employed in,
chemical actions.
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