Definition of bioassay in English:

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Pronunciation: /ˌbīōəˈsā/


Measurement of the concentration or potency of a substance by its effect on living cells or tissues.
Example sentences
  • A bioassay was developed to measure specific yolk protein synthesis in vitro.
  • In addition, a simple and efficient in vitro regeneration bioassay was developed for the preliminary screening of transgenic lines against a pathogenic fungus.
  • This bioassay provides a measure that is precise and repeatable, but more importantly reflects the ecological context of TTX intoxication.


Early 20th century: from bio- 'life' + assay.

For editors and proofreaders

Syllabification: bi·o·as·say

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