double salt
- noun
- /ˈdʌbəl sɔlt/
- Specialized
:
sal doble
- Alum is a common example of a double salt used in water purification.
Examples
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When dissolved in water, a double salt can break down into its individual ions.
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The chemist prepared a double salt by crystallizing two simple salts together.
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A double salt can enhance the flavor of dishes.
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Many double salts are used in food preservation.
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Alum is a common example of a double salt used in water purification.
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The chemist prepared a double salt by crystallizing two different simple salts.
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When heated, a double salt retains the properties of both constituent salts.
Surface Forms
Morphology
The meaning is directly derived from the constituents: 'double' (twofold) + 'salt' (ionic compound) yields a compound involving two salts together. Although the term is technical, the composition follows regular noun-compounding rules and a B1 learner who knows both words can infer the core idea.
Etymology
The noun double salt comes from the image of two different salts joining to make one double crystal. Imagine two colored crystals growing together into a single piece that keeps parts of both — that's why the term means a substance formed when 'two different simple salts' join as one.
