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methylmercury

[meth-uh l-mur-kyuh-ree] /ˌmɛθ əlˈmɜr kyə ri/
noun, Chemistry
1.
any of several extremely toxic organometallic compounds, Hg(CH 3) 2 , formed from metallic mercury by the action of microorganisms and capable of entering the food chain: used as seed disinfectants.
Origin
1915-1920
1915-20; methyl + mercury
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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