thermotension

from The Century Dictionary.

• noun In mech., tension applied to a substance which is at the same time subjected to a given temperature, for the purpose of determining the tensile strength at the temperature in question.

from the GNU version of the Collaborative International Dictionary of English.

• noun A process of increasing the strength of wrought iron by heating it to a determinate temperature, and giving to it, while in that state, a mechanical strain or tension in the direction in which the strength is afterward to be exerted.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A process of increasing the strength of wrought iron by heating it to a determinate temperature, and giving to it, while in that state, a mechanical strain or tension in the direction in which the strength is afterward to be exerted.