# def vs Dx

> English confusable word pair

## The two words

### def
*noun · IPA /dɛf/ · frequency rank #8,138*
Abbreviation of definition.

### Dx
*noun · frequency rank #21,193*
Abbreviation of diagnosis.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/def-vs-dx