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Definition of "assay" []

  • Qualitative or quantitative analysis of a metal or ore to determine its components. (noun)
  • A substance to be so analyzed. (noun)
  • The result of such an analysis. (noun)
  • An analysis or examination. (noun)
  • A bioassay. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "assay" in a sentence
  • "I. ii.18 (375,1) By no assay of reason] Bring it to the _test_, examine it by reason as we examine metals by the _assay_, it will be found counterfeit by all trials."
  • "The next writer whose work I've decided to assay is Stanislaw Lem."
  • "The flow cytometry based DHR assay is used to evaluate the oxidative metabolism of phagocytes."