1. (Science: chemistry) a partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal from associated iron ores, and called coarse metal, fine metal, etc, according to the grade of fineness. On the exterior it is dark brown or black, but on a fresh surface is yellow or bronzy in colour.
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*This is no longer a topic of debate, consideration,or experimentation amongst the modern research community--mainly because it does not matte which came first. The key Questons these days are: how do we reglate mutation in DNA? How can we inhibit RNA synthesis Reverse Transcriptase? This ...
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