pref. a prefix meaning of or pertaining to life, produced by living things, etc. [ PJC ]
adj. acting upon or influencing bodily functions; -- of chemical substances.
v.
n. appraisal of the biological activity of a substance by testing its effect on an organism. [ WordNet 1.5 ]
n. [ Gr.
n. a biochemical catalyst such as an enzyme. [ WordNet 1.5 ]
adj. of or pertaining to a biocatalyst. [ WordNet 1.5 ]
a. [ L. bis twice + ocellatus. See Ocellated. ] (Zool.) Having two ocelli (eyelike spots); -- said of a wing, etc. [ 1913 Webster ]
adj. of or pertaining to biochemistry. [ WordNet 1.5 ]
n. a chemical substance produced by a living organism, or such a substance produced synthetically. [ WordNet 1.5 ]