The organometallic cation CH3Hg+; it is a toxicant that accumulates in the environment in the form of various compounds(noun)
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Use "methylmercury" in a sentence
"When these mercury particles reach water, microorganisms consume them, transforming the particles to a highly toxic form of mercury called methylmercury , that can contaminate fish."
"The Centers for Disease Control and Prevention calls methylmercury one of the nation's most serious hazardous waste problems and says it is a possible carcinogen."
"When airborne mercury reaches water, it can change to the toxic methylmercury, which is found in tainted fish."