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

Renters and homeowners are participating in programs deploying micro-scale batteries to support the grid when needed. — Mark Levine, New York Daily News, 20 Sep. 2026

Because of the deliberately micro size, too, the team managing the Low can be nimble and respond both to community requests and wide releases in funny ways that Alamo and AMC can’t. — Sarah Shachat, IndieWire, 19 Sep. 2026

All 24 of the Micromallows in the Advent calendar are micro-sized yet fully adorable. — Chaunie Brusie, Parents, 17 Sep. 2026

On September 16, the trailer for Netflix’s Sacrifice was released, and the 30-year-old actress showed off her wavy, mid-length blonde hair with micro bangs. — Juliana Ukiomogbe, InStyle, 16 Sep. 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