Letter [edit] & mu ; • (m) (lowercase, uppercase & Mu ;) Lower-case mu (& mu ;ῦ), the 12th letter of the ancient Greek alphabet. It represented the bilabial nasal /m/. It is preceded by λ and followed by ν. Use as symbol The lowercase letter mu (μ) is used as a special symbol in many academic fields. Uppercase mu is not used, because it appears identical to Latin M. Mu (uppercase/lowercase Μ μ) is a letter of the Greek alphabet used to represent the "m" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 40. Click to copy the Mu symbol (μ Μ µ 𝚳 𝛍 𝛭 𝜇 𝜧 𝝁 𝝡 𝝻 𝞛 𝞵) and paste it on Instagram, WhatsApp, TikTok, YouTube, LinkedIn, Reddit, Snapchat, Pinterest, Discord, Telegram, X (formerly Twitter), and more.
