macrophage magmatic magnesium magnet magnitude mainstream maintenance malaria malarial maldistribution malfunction malice malleable malpractice mammalian managerial mandate mandatory maneuver manic manipulate mannerism mantle manual manufacture manufacturing manumission manuscript margin marital maritime markdown marketplace markup marrow marshy martial masculine mass mastodon materialistic maternal maternity matriarch matrix maturation mature maturity maxim maximize maximum measles mechanical mechanism mechanization median mediate medication medieval medium megacity megalithic melancholy melatonin meld membrane memoir memorandum merchandise merchant merge merger mesothelioma metabolic metabolism metabolize metallic metamorphic metaphor meteor meteorite meteorological meter methane metric microbe microcomputer micron microorganism microscopic midpoint migraine migrate mileage milieu militancy milkweed millennium milliliter millipede mimic mineralize miniature minimum minivan minority mint minuend minus minute miraculous mishap misinterpret misrepresent missile mitigate mode modem modest modification modify moisture mold mole molecule molten monarch monitor monomial mononucleosis monopolistic monopoly monsoon monumental mooring moral morale morphine morphogenetic mortality mortar mortgage mosaics mosque mosquito moth motion motivate mound mount mow multicellular multilateral multinational multiple multiplicand multiplication multiplier multiply multitude municipal municipality muon mural mutation mutual myrmecophagous mystic mythic mythology