assay
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assay
1.
a. an analysis, esp a determination of the amount of metal in an ore or the amounts of impurities in a precious metal
b. (as modifier): an assay office
2. a substance undergoing an analysis
3. a written report on the results of an analysis
assay
[′a‚sā] (analytical chemistry)
Qualitative or quantitative determination of the components of a material, as an ore or a drug.