Standard Lemma guide

uraninite

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /jʊˈɹeɪnɪnaɪt/

1

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: pitchblende

Antonyms: none provided

Broader terms: uranium ore

History

Etymology

Etymology tree English uran- Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine Proto-Indo-European *-tósder. Ancient Greek -της (-tēs)der. Ancient Greek -ῑ́της (-ī́tēs)der. Latin -ītēsbor. French -iteder. English -ite English uraninite From uran- + -ine + -ite.

Across languages

Translations

15 source translations are retained for this English entry.

  • Bulgarian: уранинит (uraninit) — form of uranium dioxide
  • Chinese Mandarin: 瀝青鈾礦 /沥青铀矿 (lìqīng yóukuàng) — form of uranium dioxide
  • Chinese Mandarin: 晶質鈾礦 /晶质铀矿 (jīngzhì yóukuàng) — form of uranium dioxide
  • Czech: uraninit — form of uranium dioxide
  • Czech: smolinec — form of uranium dioxide
  • Dutch: uraniniet — form of uranium dioxide
  • Finnish: uraniniitti — form of uranium dioxide
  • French: uraninite — form of uranium dioxide
  • German: Uraninit — form of uranium dioxide
  • German: Pechblende — form of uranium dioxide
  • Icelandic: úranínít — form of uranium dioxide
  • Italian: uraninite — form of uranium dioxide
  • Romanian: uraninit — form of uranium dioxide
  • Slovak: uraninit — form of uranium dioxide
  • Slovak: smolinec — form of uranium dioxide