# iodine

> English word · Noun · IPA /ˈaɪ.əˌdaɪn · frequency rank #22,710

## Definitions
1. A chemical element (symbol: I) with an atomic number of 53; one of the halogens.
2. An antiseptic incorporating the element.
3. An iodide.

## Etymology
From French iode + -ine, from Ancient Greek ἰοειδής (ioeidḗs, “violet”). Coined by British chemist Humphry Davy in 1814.

## Easily confused with
- **Irvine** (https://plainspell.com/en/vs/iodine-vs-irvine)
- **indie** (https://plainspell.com/en/vs/indie-vs-iodine)
- **inline** (https://plainspell.com/en/vs/inline-vs-iodine)
- **iodide** (https://plainspell.com/en/vs/iodide-vs-iodine)

## Common misspellings (7)
`idoine`, `ioddine`, `iodien`, `iodinne`, `iodnie`, `ioidne`, `oidine`

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