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

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 terms. Micro- …

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".

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

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

Micro things are so small you can't see them, or reduced to a very small scale. When you study a subject like economics on a micro level, you look at individual markets instead of the whole economy.

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

micro-, prefix. micro- comes from Greek, where it has the meaning: small or very small in comparison with others of its kind: micro- + organism → microorganism (= very small living creature).

Britannica Dictionary definition of MICRO- 1 a : very small micro film micro computer b : making a sound louder or an image larger micro phone

Definition of micro- combining form in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.