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pitchblende

American

[pich-blend] / ˈpɪtʃˌblɛnd /

noun

Mineralogy.

a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.

pitchblende British

/ ˈpɪtʃˌblɛnd /

noun

a blackish mineral that is a type of uraninite and occurs in veins, frequently associated with silver: the principal source of uranium and radium. Formula: UO 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pitchblende Scientific

/ pĭch′blĕnd′ /

A brown to black, often crusty, cubic mineral that is a principal ore of uranium. It is highly radioactive. Chemical formula: UO ₂ .

Etymology

Origin of pitchblende

1760–70; half translation, half adoption of German Pechblende. See pitch ², blende

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023