# lithium

> English word · Noun · IPA /ˈlɪθi.əm/ · frequency rank #13,750

## Definitions
1. The simplest alkali metal, the lightest solid element, and the third lightest chemical element (symbol Li) with an atomic number of 3 and atomic weight of 6.94. It is a soft, silvery metal.
2. A single atom of this element.
3. Lithium carbonate or other preparations of lithium metal used as a mood stabiliser to treat manic depression and bipolar disorders.
4. A lithium battery.

## Etymology
From New Latin lithium, from Ancient Greek λίθος (líthos, “stone”) + -ium.

## Common misspellings (10)
`ilthium`, `lihtium`, `lithhium`, `lithimu`, `lithiumm`, `lithuim`, `litihum`, `litthium`, `llithium`, `ltihium`

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