 | Mercury (alternate #5) An alchemical symbol used to indicate mercury and mercury-based compounds. |
 | Mercury (alternate #6) One of several alchemical symbols for mercury, this one indicating both the substance and the planet. |
 | Mercury (alternate #7) An alchemical symbol indicating argent vif ("lining silver" in French), otherwise known as mercury. |
 | Mercury (alternate #8) One of several alchemical symbols used to indicate mercury. |
 | Mercury (metal) Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum (from Greek "hydr-" water and "argyros" silver). |
 | Messianic Judaism This is a symbol of the Messianic Judaism movement which started in the 1960s-1970s. Messianic Judaism combines elements of Judaism and Christianity. |
 | Metal (alchemy) A general alchemical sign indicating metal. |
 | Metal Clan Symbol of the Metal Clan, a group featured in the television series “The Legend of Korra”. |
 | Metal Dragon egg Icon used to indicate a Metal Dragon egg in the game DragonVale. |
 | Metallum sulphuratum A symbol used in 18th century chemistry to indicate a compound of sulphur and a metal. |
 | Meteor Dragon egg Icon used to indicate a Meteor Dragon egg in the game DragonVale. |
 | Meteorological observatory Japanese map symbol for meteorological observatory |
 | Metro-Goldwyn-Mayer Mascot Leo the Lion is the mascot for the Hollywood film studio Metro-Goldwyn-Mayer and one of its predecessors, Goldwyn Pictures, featured in the studio's production logo, which was created by the Paramoun… |
 | Mexican Air Force This is the logo of the Mexican Air Force(Fuerza Aerea Mexicana) |
 | Mexican Army This is the emblem of the Mexican Army(Ejercito Mexicano) |
 | Mexican Navy This is the logo of the Mexican Navy(Secretaria De Marina Armada De Mexico) |
 | Mezzo-soprano clef When the C-clef is placed on the second line of the stave, it is called the mezzo-soprano clef. |
 | Mframadan Wind-resistant house |
 | Miami Dolphins Logo The Dolphins logo and uniforms remained fairly consistent from the team's founding through 2012. The team's colors were originally aqua and orange, with the original logo consisted of a sunburst with… |
 | Miami Heat Logo Red basketball with flames goes through a white hoop. |
 | Miami University The Miami University seal includes three elements in a circle: an open book, a globe of the earth, and a telescope. These three elements symbolize the past, the present, the future. |
 | Miasma Dragon Egg Icon used to indicate a Miasma Dragon egg in the game DragonVale. |
 | Michaelmas A symbol from the clog almanacs used in Medieval Scandinavia. |
 | Michalemas (alternate) A symbol from the clog almanacs used in Medieval Scandinavia. |
 | Michigan State University Seal Michigan State University has four primary visual marks—the Michigan State University wordmark, university seal, block S, and Spartan helmet. |
