# indium

> English word · Noun · IPA /ˈɪndi.əm/ · frequency rank #56,828

## Definitions
1. A chemical element (symbol In) with an atomic number of 49: a soft silvery-white metal.
2. A single atom of this element.

## Etymology
Coined as a New Latin term from German Indigo (“indigo”), based on the color of its spectral lines.

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