An astringent mineral salt, typically occurring as colourless or whitish crystals, that is used as a mordant for dyeing, in tanning, for sizing…
| 单词 | θ7155 |
| 释义 | the world > the earth > minerals > types of mineral > sulphates > [noun] > alum (17) aluma1398 An astringent mineral salt, typically occurring as colourless or whitish crystals, that is used as a mordant for dyeing, in tanning, for sizing… alumen?a1425 The mineral alum (alum, n.1). Subcategories:— halotrichite (2) — feather alum (5) — Roman alum (2) — other alums (6) |
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