Metaglossary.com - Definitions for "{term}"

Keywords: living, effect, biological, chemically, tissue

A substance that has an effect on living tissue.

biotechlearn.org.nz

Having an effect on a living organism.

having an effect on a biological system.

biojudiciary.org

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Keywords: bodily, influencing, chemical, substances, acting

acting upon or influencing bodily functions; -- of chemical substances.