biomagnificationn.

Brit.

/ˌbʌɪə(ʊ)ˌmaɡnᵻfᵻˈkeɪʃn/, U.S.

/ˌbaɪoʊˌmæɡnəfəˈkeɪʃən/

Origin: Formed within English, by compounding. Etymons: bio- comb. form, magnification n.

Etymology: < bio- comb. form + magnification n. Compare slightly later biomagnify v.

Environmental Science.

Accumulation of (toxic) chemicals in the tissues of organisms; spec. their progressive concentration in organisms further up the food chain.

ΚΠ

1969 N.Y. Times 27 Apr. d42/5 Continuous exposure of soil and water organisms to low levels of DDT or other chlorinated hydrocarbons results in a build-up (biomagnification) of the pesticide in the fatty tissues of the organism many times over the level of exposure.

1970 Technol. Assessment: Hearings (U.S. Congress. House Comm. Sci. & Astronautics) 54 Radioactive fallout contaminated much of our food and water and was shown to undergo biomagnification in aquatic animals.

1984 D. W. Connell & G. J. Miller Chem. & Ecotoxicol. Pollution 38 The degree of biomagnification is usually a complex function of: the number of links in the food chain..; the nature of the compound being bioaccumulated; [etc.].

2003 Nat. New Eng. Summer 44/3 The alewife..have not accrued these toxins in their bodies. Thus, a large alewife run will help to curtail the harmful effects of biomagnification on fish-eating birds.

This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021).

单词	biomagnification
释义	biomagnificationn. Brit. /ˌbʌɪə(ʊ)ˌmaɡnᵻfᵻˈkeɪʃn/, U.S. /ˌbaɪoʊˌmæɡnəfəˈkeɪʃən/ Origin: Formed within English, by compounding. Etymons: bio- comb. form, magnification n. Etymology: < bio- comb. form + magnification n. Compare slightly later biomagnify v. Environmental Science. Accumulation of (toxic) chemicals in the tissues of organisms; spec. their progressive concentration in organisms further up the food chain. ΚΠ 1969 N.Y. Times 27 Apr. d42/5 Continuous exposure of soil and water organisms to low levels of DDT or other chlorinated hydrocarbons results in a build-up (biomagnification) of the pesticide in the fatty tissues of the organism many times over the level of exposure. 1970 Technol. Assessment: Hearings (U.S. Congress. House Comm. Sci. & Astronautics) 54 Radioactive fallout contaminated much of our food and water and was shown to undergo biomagnification in aquatic animals. 1984 D. W. Connell & G. J. Miller Chem. & Ecotoxicol. Pollution 38 The degree of biomagnification is usually a complex function of: the number of links in the food chain..; the nature of the compound being bioaccumulated; [etc.]. 2003 Nat. New Eng. Summer 44/3 The alewife..have not accrued these toxins in their bodies. Thus, a large alewife run will help to curtail the harmful effects of biomagnification on fish-eating birds. This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021). < n.1969
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