assay meaning

Pronunciation:   "assay" in a sentence
  • Noun: assay  asey
    1. An appraisal of the state of affairs
      "they made an assay of the contents"
      - check 
    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.
    Verb: assay  asey
    1. Analyse (chemical substances) 
    2. Make an effort or attempt
      - try, seek, attempt, essay

    Derived forms: assayed, assays, assaying

    See also: assayer

    Type of: act, analyse [Brit, Cdn], analyze [N. Amer], appraisal, assessment, canvas, canvass, examine, move, report, run, study, substance, test, trial, written report

    Encyclopedia: Assay Assay, Indre-et-Loire

  • [Finance]
    Metal purity test to confirm that the metal meets the standards for trading on a commodities exchange (commodities exchange center).

  • [Medicine]
    vt : to analyze (an impure substance or mixture) for one or more specific components ‹the sample was assayed for drug content›
    1 : examination and determination as to characteristics (as weight, measure, or quality)
    2 : analysis (as of a drug) to determine the presence, absence, or quantity of one or more components —compare BIOASSAY
    3 : a substance to be assayed; also : the tabulated result of assaying


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  1. the ore assays high in silver.
  2. tissue culture is the most important tool used in virus assay.
  3. most enzyme assays monitor disappearance of a product.
  4. such an assay does not preclude the direct exchange of serine and glycerol phosphate.
  5. bacteriophages are also assayed by a plague assay method based on similar principles.

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