- a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.
Origin of pitchblende
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pitchblende
It occurs in the pitchblende of Saxony, and the uranite of Cornwall.Cooley's Practical Receipts, Volume II
Pitchblende also occurs, and is mined for the extraction of radium.
Suppose a bearer of the Medal of Honor formed a stock corporation to exploit the pitchblende of Callisto.
The project at hand is to extract the newly discovered deposits of pitchblende on these satellites of Jupiter.
M. Debierne has obtained a third radioactive substance from pitchblende, which he has called “Actinium.”Alchemy: Ancient and Modern
H. Stanley Redgrove
- 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
C18: partial translation of German Pechblende, from Pech pitch ² (from its black colour) + blende
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
Word Origin and History for pitchblende
Online Etymology Dictionary, © 2010 Douglas Harper
- A brown to black, often crusty, cubic mineral that is a principal ore of uranium. It is highly radioactive. Chemical formula: UO2.
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