# francium

> English word · Noun · IPA /ˈfɹansɪəm/

## Definitions
1. The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
2. A single atom of this element.

## Etymology
From French francium, from France + -ium (after the native country of Marguerite Perey).

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