A substance produced by an organism that neutralizes toxins made by that same organism.
From 'auto-' (self), 'anti-' (against), and 'toxin' (poison). This is a biochemical term that emerged in the study of bacterial toxins.
Some bacteria produce autoantitoxins to prevent their own toxins from killing them—it's like a company that makes poison also selling the antidote to itself to stay in business.
Complete word intelligence in one call. Free tier — 50 lookups/day.