BIOASSAY Scrabble 13 Words With Friends 13 Definition verb subject to a bio-assay. noun appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard. — synonyms: bio-assay See all 80 words you can make from BIOASSAY → 8-letter words Words starting with B Words ending with Y ← Unscramble different letters