what is xenobiotic
Xenobiotic. A xenobiotic is a chemical which is found in an organism but which is not normally produced or expected to be present in it. It can also cover substances which are present in much higher concentrations than are usual.iktionary (0.00 / 0 votes) Rate this definition: xenobiotic (Noun). Any foreign compound not produced by an organism's metabolism. xenobiotic (Adjective). Of or pertaining to xenobiosis. xenobiotic (Adjective). Relating to a substance foreign to the body or ecological system.