micro

1 of 3

adjective

mi·​cro ˈmī-(ˌ)krō 

1

: very small

especially : microscopic

2

: involving minute quantities or variations

micro

2 of 3

noun

plural micros

1

: microcomputer

2

: microprocessor

micro-

3 of 3

combining form

see micr-

Examples of micro in a Sentence

Recent Examples on the Web

Adjective

And would force me to be very obsessive, in bad ways, about these small, little, micro transactions. — Mekishana Pierre, Entertainment Weekly, 30 June 2026

On board is a micro rover built by ispace called Tenacious as well as several commercial payloads. — Richard Tribou, The Orlando Sentinel, 5 July 2026

During slower months like these, her micro cabin would only get to 65% capacity. — Emma Burleigh, Fortune, 3 July 2026

Think single-dot designs, slim vertical stripes, and micro French tips, or a single hibiscus flower painted on an accent nail. — Ariel Wodarcyk, InStyle, 3 July 2026

Word History

Etymology

Adjective

independent use of micro-

Noun

by shortening

First Known Use

Adjective

1923, in the meaning defined at sense 1

Noun

1971, in the meaning defined at sense 1

Phrases Containing micro

• micro-dose
• micro-dosing
• micro-grid
• micro-inverter
• micro-mobility
• micro-RNA

Rhymes for micro

• acknow
• aglow
• ago
• airglow
• aloe
• altho
• although
• ammo
• backflow
• backhoe
• banjo
• barbeau

Kids Definition

micro

adjective

mi·​cro

ˈmī-krō

: microscopic sense 3

Medical Definition

micro

adjective

mi·​cro ˈmī-(ˌ)krō 

1

: very small

especially : microscopic

2

involving minute quantities or variations