Definition of bioassay in English:


Syllabification: bi·o·as·say
Pronunciation: /ˌbīōəˈsā, -ˈasā


  • Measurement of the concentration or potency of a substance by its effect on living cells or tissues.
    More 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.

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