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Micro (Greek letter μ, mu, non- italic) is a unit prefix in the metric system denoting a factor of one millionth (10 −6). [1] It comes from the Greek word μικρός (mikrós), meaning "small".

The decimeter is one tenth of a meter, the centimeter is one hundredth of a meter, the millimeter is one thousandth of a meter, and the micrometer is one millionth of a meter. In practice, some …

The meaning of MICRO is very small; especially : microscopic.

Add to word list very small: a microbrewery (Definition of micro from the Cambridge Academic Content Dictionary © Cambridge University Press)

Micro- is a combining form used like a prefix meaning “small.” In units of measurement, micro- means "one millionth." The form micro- is often used in a variety of scientific and technical …

Micro is a SI unit prefix in the metric system denoting a factor of 10⁻⁶ (one millionth). It is represented by the prefix micro or the symbol µ.

Illustrated definition of Micro-: A prefix meaning one-millionth (1/1,000,000 or 10-6) Examples: a micrometer is one-millionth...

Sep 4, 2025 · Micro refers to something very small, often microscopic, and is used in various contexts, including science and technology. It denotes a unit prefix in the metric system …

micro (maɪkroʊ ) adjective [usually ADJECTIVE noun] You use micro to indicate that something relates to a specific area, rather than a general one [mainly technical]