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单词 biomagnify
释义

biomagnifyv.

Brit. /ˌbʌɪə(ʊ)ˈmaɡnᵻfʌɪ/, U.S. /ˌbaɪoʊˈmæɡnəˌfaɪ/
Origin: Formed within English, by compounding. Etymons: bio- comb. form, magnify v.
Etymology: < bio- comb. form + magnify v. Compare slightly earlier biomagnification n.
Environmental Science.
1. intransitive. Of a (toxic) chemical: to become progressively more concentrated in organisms further up the food chain, or in a specific environment, etc. Cf. bioaccumulate v. 2, bioconcentrate v. 1.
ΚΠ
1972 Pollution Potential in Pesticide Manuf. (Midwest Res. Institute, Kansas City) 92 The half-life [of chlordane] in soil is about 2 years (although it does not migrate or biomagnify).
1996 Esquire Jan. 84/1 [He] believes chemicals that biomagnify in animal tissue must be banned.
2007 Science 13 July 183/1 Some organic chemicals that don't biomagnify in fish appeared to be doing so in other wildlife and humans.
2. transitive. Of an organism: to accumulate (a chemical), esp. so that it becomes progressively more concentrated in organisms further up the food chain, or in a specific environment. Cf. bioaccumulate v. 1, bioconcentrate v. 2. Usually in passive.
ΚΠ
1973 Environmental Health Perspectives 4 33 DDT was biomagnified in the snail 34,500 times.
1998 Daily Tel. 20 Jan. 7/5 The MAFF report said: ‘Dioxins and BCPs are known to be biomagnified as they progress through the food chain.’
2003 R. J. Livingston Trophic Organization in Coastal Syst. ix. 232 The methylated form of mercury..is bioconcentrated in individual aquatic organisms and biomagnified up aquatic food webs with top predators such as large fishes, birds, and mammals..having the highest concentrations.
This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021).
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