usage: an appraisal of the state of affairs; "they made an assay of the contents"; "a check on its dependability under stress"
2. assay, substance
usage: a substance that is undergoing an analysis of its components
3. assay, report, study, written report
usage: a written report of the results of an analysis of the composition of some substance
4. assay, test, trial, run
usage: 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.
usage: make an effort or attempt; "He tried to shake off his fears"; "The infant had essayed a few wobbly steps"; "The police attempted to stop the thief"; "He sought to improve himself"; "She always seeks to do good in the world"