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martempering

[mahr-tem-per-ing]
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noun Metallurgy.
  1. a quenching process used to harden austenitic steel.

Origin of martempering

First recorded in 1940–45; mar(tensite) + temper + -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018