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| cu·pram·mo·ni·um [ kprə mṓnee əm ] |
noun |
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1. chemistry copper-ammonia ion: an ion obtained by adding a copper salt to a solution of ammonia, used in the manufacture of rayon. Cu(NH3)42+
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2. textiles rayon resembling silk: a rayon that resembles silk, produced by spinning cellulose treated with a solution containing cuprammonium ions
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