Englishfor English speakers
hardening
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noun
(= set)
the process of becoming hard or solid by cooling or drying or crystallization
the hardening of concrete
he tested the set of the glue
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noun
abnormal hardening or thickening of tissue
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noun
the act of making something harder (firmer or tighter or more compact)
kiln
Noun
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A kiln is an oven or furnace for hardening, burning, or drying.
Before placing the clay into the kiln for firing, please preheat it to 300 degrees Celsius.