Dictionary definition · assay
noun
- an appraisal of the state of affairs"they made an assay of the contents"
- a substance that is undergoing an analysis of its components
- a written report of the results of an analysis of the composition of some substance
- a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.
verb
- analyze (chemical substances)
- make an effort or attempt"He tried to shake off his fears"
Source: Open English WordNet (CC BY 4.0).