biological magnificationmedical dictionary

<biology, zoology> The process by which toxins such as pesticides build up in each successive link in the food chain.

For instance, a given population of beetles may have very low levels of a fat-soluble pesticide, but the pesticide will build to much greater levels in the fat of a bird that eats those beetles, and the pesticide will reach greater levels still in a human or panther that eats the beetle-eating birds.

(21 Mar 1998)