# rontgenite

> English word · Noun

## Definitions
1. A mixed carbonate and fluoride of calcium and a lanthanide, typically cerium or lanthanum

## Etymology
Likely from Röntgen + -ite.

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