bioassay vs bio-assay

bioassay and bio-assay both are nouns.

Word	Noun	Adjective	Verb	Adverb
bioassay	Yes	No	Yes	No
bio-assay	Yes	No	No	No

As nouns, bioassay and bio-assay are synonyms defined as:

bioassay and bio-assay: appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard

bioassay (noun)	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	appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard

bioassay (verb)	bio-assay (verb)
subject to a bio-assay