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bioassay

[noun bahy-oh-uh-sey, -as-ey; verb bahy-oh-uh-sey]
noun
  1. determination of the biological activity or potency of a substance, as a vitamin or hormone, by testing its effect on the growth of an organism.
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verb (used with object), bi·o·as·sayed, bi·o·as·say·ing.
  1. to subject to a bioassay.
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Origin of bioassay

First recorded in 1910–15; bio(logical) + assay
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for bioassay

bioassay

noun (ˌbaɪəʊəˈseɪ, -ˈæseɪ)
  1. a method of determining the concentration, activity, or effect of a change to substance by testing its effect on a living organism and comparing this with the activity of an agreed standard
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verb (ˌbaɪəʊəˈseɪ)
  1. (tr) to subject to a bioassay
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

bioassay in Medicine

bioassay

(bī′ō-ăsā′, -ă-sā)
n.
  1. Determination of the strength or biological activity of a substance, such as a drug or hormone, by comparing its effects with those of a standard preparation on a test organism.
  2. A test used to determine such strength or activity.
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v.
  1. To cause to undergo a bioassay.biologic assay
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

bioassay in Science

bioassay

[bī′ō-ăsā′, -ă-sā]
  1. Determination of the relative purity of a substance, such as a drug or hormone, by comparing its effects with those of a standard preparation on a culture of living cells or a test organism.
  2. A test used to determine such purity.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.