Standard Lemma guide
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.
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noun
Naturally-occurring uranium oxide, a variety of the mineral uraninite.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
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.
Synonyms: uraninite
Antonyms: none provided
Broader terms: uranium ore
History
From German Pechblende, from Pech (“pitch”) + Blende (“blende”).
Across languages
9 source translations are retained for this English entry.
