Technical term in metallurgy and materials science: heating metal or glass and then cooling it slowly to remove internal stresses and increase ductility.
Annealing the steel makes it easier to work with.
If you neglect to anneal the glass, it becomes prone to cracking.
Standard spelling with okurigana, clear and common in technical contexts.
Variant without the okurigana き; seen in some technical writing.
Uses the rare kanji 鈍; mostly found in older or specialized metallurgy texts.
Combines okurigana with the rare kanji 鈍; very uncommon.
Compound of 焼き (yaki, 'baking, heating') + なまし (namashi, 'softening, annealing'), from 焼く (yaku, 'to burn, heat') and 鈍す (namasu, 'to soften metal by heating'). The kanji 鈍 is rare and often replaced by kana.