[ bahy-oh-mag-nuh-fi-key-shuh n ]
/ ˌbaɪ oʊˌmæg nə fɪˈkeɪ ʃən /


Nearby words

  1. bioluminescence,
  2. bioluminescent,
  3. biolysis,
  4. biolytic,
  5. biomagnetism,
  6. biomagnify,
  7. biomarker,
  8. biomass,
  9. biomaterial,
  10. biomathematics

Origin of biomagnification

First recorded in 1970–75; bio- + magnification Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for biomagnification


[ bī′ō-măg′nə-fĭ-kāshən ]

The increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain. As a result of biomagnification, organisms at the top of the food chain generally suffer greater harm from a persistent toxin or pollutant than those at lower levels. Compare bioaccumulation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.