Synonyms of the word 
TEMPERING → ANNEALING - HARDENING - MODERATING
tempering
- v. present participle of temper.
- n. The act by which something is tempered.
annealing
- n. The heating of solid metal or glass to high temperatures and cooling it slowly so that its particles arrange…
- v. present participle of anneal.
hardening
- v. present participle of harden.
- n. The process by which something hardens.
- n. That which hardens, such as a material used for converting the surface of iron into steel.
moderating
- v. present participle of moderate.
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