# uraninite

> English word · Noun · IPA /jʊˈɹeɪnɪnaɪt/

## Definitions
1. Any of several brownish-black forms of uranium dioxide, UO₂, (especially pitchblende) that is the chief ore of uranium; it is isomorphous with thorianite.

## Etymology
From uran- + -ine + -ite.

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