1.Definition: 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.

Category: General

2.Definition: a substance that is undergoing an analysis of its components

Category: General

3.Definition: a written report of the results of an analysis of the composition of some substance

Category: General

4.Definition: an appraisal of the state of affairs

"They made an assay of the contents", "A check on its dependability under stress"

Related Noun(s):check

Category: General