Ferretto definitions

Ferretto

• (n.) Copper sulphide, used to color glass.
Found on http://thinkexist.com/dictionary/meaning/ferretto/

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Ferretto

Fer·ret'to noun [ Italian ferretto di Spagna, dim. of ferro iron, from Latin ferrum .] Copper sulphide, used to color glass. Hebert.
Found on http://www.encyclo.co.uk/webster/F/21

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