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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 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.

1. Very small or microscopic. 2. Basic or small-scale: the economy's performance at the micro level.

Micro definition: Very small or microscopic.

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]

Jun 25, 2025 · Meaning of micro, a metric system prefix denoting one-millionth. Discover smaller or larger SI units, micro-related tech terms, and more in this article.