Noun
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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.
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a written report of the results of an analysis of the composition of some substance
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a substance that is undergoing an analysis of its components
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an appraisal of the state of affairs
"they made an assay of the contents"
"a check on its dependability under stress"
Verb
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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"
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analyze (chemical substances)