Micro-

For other uses, see Micro.

μ
Micro-
In UnicodeU+03BC μ GREEK SMALL LETTER MU
Different from
Different fromU+00B5 µ MICRO SIGN (discouraged)
Look up micro- in Wiktionary, the free dictionary.

Micro (Greek letter μ, mu, non-italic) is a unit prefix in the metric system denoting a factor of one millionth (10−6). It comes from the Greek word μικρός (mikrós), meaning "small".

It is the only SI prefix which uses a character not from the Latin alphabet. In Unicode, the symbol is represented by U+03BC μ GREEK SMALL LETTER MU or the legacy symbol U+00B5 µ MICRO SIGN. The prefix "mc" is also commonly used; for example, "mcg" denotes a microgram (whereas mg denotes a milligram).

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