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pitchblende

American  
[pich-blend] / ˈpɪtʃˌblɛnd /

noun

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


pitchblende British  
/ ˈpɪtʃˌblɛnd /

noun

  1. 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  
/ pĭchblĕnd′ /
  1. 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

Vocabulary lists containing pitchblende

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The elements were found in a mineral called pitchblende that released a powerful form of energy.

From Textbooks • Jan. 1, 2012

He didn't get it; the big bonus is offered only to those who find a deposit of high-grade ore, such as pitchblende.

From Time Magazine Archive

It is 25% rarer than radium in pitchblende.

From Time Magazine Archive

A two-inch seam of uranium-bearing pitchblende stood out on the shoreline rock.

From Time Magazine Archive

He tested a piece of pitchblende, the principal ore of uranium, and found it to be 700 million years old–very much older than the age most people were prepared to grant the Earth.

From "A Short History of Nearly Everything" by Bill Bryson

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