Also found in: Medical, Acronyms, Wikipedia.


(Chemistry) any of various highly toxic organic compounds of mercury that contain the complex CH3Hg-


(ˌmɛθ əlˈmɜr kyə ri)

any of several extremely toxic organometallic compounds, Hg(CH3)2, formed from metallic mercury by the action of microorganisms and capable of entering the food chain: used as seed disinfectants.
References in periodicals archive ?
Methylmercury is a neurotoxin that forms in nature when mercury interacts with certain microbes living in soil and waterways.
In this study of young adult members of a Faroese birth cohort, we hypothesized that prenatal exposure to methylmercury might adversely affect adult neurogenesis, thus attenuating the potential beneficial effect of aerobic fitness on cognitive functions.
org/content/3/1/e1601239) The study , titled "Terrestrial discharges mediate trophic shifts and enhance methylmercury accumulation in estuarine biota," considered the increasing amount of runoff and the resultant increase of organic matter in large water bodies - caused by global warming - and its impact on plankton.
There is actually methylmercury production going on there," Bell says of the Harvard study.
Harada, "Minamata disease: methylmercury poisoning in Japan caused by environmental pollution," Critical Reviews in Toxicology, vol.
The tragic consequences of industrial release of methylmercury into Minamata Bay off Japan between 1932 and 1968 and the illegal dumping of inorganic mercury into the waters at Grassy Narrows, Ontario, Canada in 1970 demonstrated in horrific terms the effects of methylmercury on human health: defects in fetuses and neurological disruption in children and adults that, in severe cases, led to madness, paralysis and death.
1) Fish that are low in methylmercury include salmon and canned light tuna.
Methylmercury is commonly found in fish, both freshwater and saltwater.
This study investigated how methylmercury effects Daphnia pulex in the presence of predatory stress chemical.
The study showed the fish in warmer waters ate more but grew less and had higher methylmercury levels in their tissues, suggesting increases in their metabolic rate caused the increased uptake of the toxic metal.
As a naturally occurring element, mercury may be found in water supplies in the form of methylmercury.
Methylmercury is measured in parts per million (PPM), or one part per million parts of body tissue.