: to make (something) more attractive usually by putting something on it.
There are several types of mercury. They include metallic mercury, and both inorganic and organic mercury compounds. Many of these forms are found in our environment, however, the most common natural forms include metallic mercury, mercury sulfide, mercuric chloride, and methylmercury (http://www.atsdr.cdc.gov/toxprofiles/tp46.html).
Mercury exists in several forms: elemental or metallic mercury, inorganic mercury compounds, and organic mercury compounds. Mercury exposure at high levels can harm the brain, heart, kidneys, lungs, and immune system.