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noun [ C or U ] uk / əˈseɪ, æsˈeɪ / us / ˈæ.seɪ, əˈseɪ / an examination of a substance to test how pure it is or what its properties (= qualities) are: Assays are performed to establish the metal content in samples taken from the rock. About 24 hours before assay the sample was placed in 80% ethanol. More examples.
1. : examination and determination as to characteristics (such as weight, measure, or quality) 2. : analysis (as of an ore or drug) to determine the presence, absence, or quantity of one or more components.
A quantitative determination of the amount of a given substance in a particular sample. Assays are regularly used to determine the purity of precious metals. They can be performed by wet methods or dry methods. In the wet method, the sample is dissolved in a reagent, like an acid, until the purified metal is separated out.
An assay is a breakdown of a material, examining the individual parts that make up the whole. When you assay a situation, you look at all the elements that created the problem in order to come up with a solution.
An assay is an investigative (analytic) procedure in laboratory medicine, mining, pharmacology, environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence, amount, or functional activity of a target entity.
An assay is a test of a substance to find out what chemicals it contains. It is usually carried out to find out how pure a substance is.
Assay definition: to examine or analyze. See examples of ASSAY used in a sentence.
Definition of assay noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Definition of assay verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
1. a. To subject (a metal, for example) to chemical analysis so as to determine the strength or quality of its components. b. To bioassay. 2. To examine by trial or experiment; put to a test: assay one's ability to speak Chinese. 3. To evaluate; assess: assayed the situation before taking action. 4.
