| Minor port Japanese map symbol for Minor port | |
| Mirage Dragon egg Icon used to indicate a Mirage Dragon egg in the game DragonVale. | |
| Miscellaneous Plastics Other plastics, such as acrylic, nylon, polycarbonate, and polylactic acid (a bioplastic), and multilayer combinations of different plastics. | |
| Mist Mist | |
| Mitsubishi Motors Symbol The logo of three red diamonds, shared with over forty other companies within the keiretsu, predates Mitsubishi Motors itself by almost a century. | |
| Mix (alchemy) An alchemical symbol indicating the process of mixing. | |
| Mix (alternate #1) An alchemical symbol indicating the process of mixing. | |
| Mix (alternate #2) An alchemical symbol used to indicate a mixture. | |
| Mjolnir In Norse mythology, Mjolnir is the hammer of Thor, the Norse god of thunder. Distinctively shaped, Mj | |
| Mjolnir -- The Hammer of Thor In Norse mythology, Mjolnir is the hammer of Thor, the Norse god associated with thunder. | |
| Mmere Dane Time changes | |
| Mmomudwan Unity | |
| Mmra Krado Seal of Law and Order | |
| Mmusuyidee That which removes bad luck | |
| Mò Chinese character representing "Mò", which translates as 'Ink'. | |
| Modulo 2 Sum Adding two numbers together bit by bit performing the xor operation on the pairs of bits. | |
| Mòlì Chinese characters representing "Mòlì", which translates as 'Jasmine'. | |
| Molten gold (alchemy) The alchemical symbol for something known as "aurum cum caloric", possibly molten gold. | |
| Monad of Dr. John Dee Although this symbol dates back less than five hundred years, the components it consists of, as well as the meanings of those components, are significantly older. | |
| Money and food A French hobo sign showing that you can get money and food here. | |
| Monkey (zodiac) The Monkey (猴) is the ninth of the 12-year cycle of animals which appear in the Chinese zodiac related to the Chinese calendar. The Year of the Monkey is associated with the earthly branch symbol 申. | |
| Mont Bégo #1 A carving discovered on the face of Mont Bégo in southwestern France, in the Vallée des Merveilles ("Valley of Marvels"). No contextual information known at this time. | |
| Mont Bégo #3 A carving discovered on the face of Mont Bégo in southwestern France, in the Vallée des Merveilles ("Valley of Marvels"). No contextual information known at this time. | |
| Mont Bégo #2 A carving discovered on the face of Mont Bégo in southwestern France. It was found amidst a number of carvings from the Neolithic era, but it could easily have been carved at later date. No major con… | |
| Month (alchemy) An alchemical "time sign" used to indicate the period of a month. |
