n.

1. an appraisal of the state of affairs;
   check
   
   • they made an assay of the contents
   • a check on its dependability under stress
2. a substance that is undergoing an analysis of its components
3. a written report of the results of an analysis of the composition of some substance
4. 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.

v.

1. analyze (chemical substances)
2. make an effort or attempt;
   try, seek, attempt, essay
   
   • 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