Medical Dictionary

bioassay

noun bio·as·say \-ˈas-ˌā, -a-ˈsā\

Medical Definition of BIOASSAY

:  determination of the relative strength of a substance (as a drug) by comparing its effect on a test organism with that of a standard preparation
bio·as·say \-a-ˈsā, -ˈas-ˌā\ transitive verb

Browse

How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears