bioassay

noun

1. determination of the biological activity or potency of a substance, as a vitamin or hormone, by testing its effect on the growth of an organism.

verb (used with object), bi·o·as·sayed, bi·o·as·say·ing.

2. to subject to a bioassay.

noun (ˌbaɪəʊəˈseɪ, -ˈæseɪ)

1. a method of determining the concentration, activity, or effect of a change to substance by testing its effect on a living organism and comparing this with the activity of an agreed standard

verb (ˌbaɪəʊəˈseɪ)

2. (tr) to subject to a bioassay

n.

1. Determination of the strength or biological activity of a substance, such as a drug or hormone, by comparing its effects with those of a standard preparation on a test organism.
2. A test used to determine such strength or activity.

v.

1. To cause to undergo a bioassay.biologic assay

1. Determination of the relative purity of a substance, such as a drug or hormone, by comparing its effects with those of a standard preparation on a culture of living cells or a test organism.
2. A test used to determine such purity.