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

The slow exchange with oxygen is imitated with micro-oxygenation technology — essentially, blowing bubbles through the wine. — Peter Hahn, Fortune, 29 Sep. 2026

While much of the focus on the growing vertical video/microseries category has focused on the creation of original, low-budget content, there also has been a marketplace for pre-existing fare that is edited down into micro-sized bites. — Michael Schneider, Variety, 28 Sep. 2026

Her signature micro braids were scooped up into a half-up, half-down style with free-flowing tendrils curling around her forehead and cheekbones. — Ariel Wodarcyk, InStyle, 27 Sep. 2026

Magic Eraser has a stain-removing micro-scrubbing agent that is activated by water. — Stephanie Osmanski, Better Homes & Gardens, 26 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