The act or process of glazing; a glassy coating or finish applied to pottery, ceramics, or other surfaces; the material used in this process.
From glaze (Middle English glase, from Old French glacer 'to freeze, gloss') + -ment (suffix forming nouns of action or result). The word describes the product of glazing.
Medieval potters didn't have chemistry degrees, but they discovered that certain minerals melted into beautiful glass coatings when heated—'glazement' is literally cooking minerals into prettiness.
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