# M3 vs mi

> English confusable word pair

## The two words

### M3
*noun · frequency rank #17,404*
an ISO metric screw thread size for screws with a nominal outer diameter of 3 millimetres

### mi
*noun · IPA /miː/ · frequency rank #4,315*
A syllable used in sol-fa (solfège) to represent the third note of a major scale.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/m3-vs-mi