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pyrognostics

[pahy-ruh g-nos-tiks] /ˌpaɪ rəgˈnɒs tɪks/
plural noun
1.
those properties of a mineral that it exhibits when heated, alone or with fluxes, in the blowpipe flame, as the fusibility, intumescence, or other phenomena of fusion, flame coloration, etc.
Origin of pyrognostics
1840-1850
First recorded in 1840-50; pyro- + gnost(ic) + -ics
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for pyrognostics

pyrognostics

/ˌpaɪrɒɡˈnɒstɪks/
plural noun
1.
the characteristics of a mineral, such as fusibility and flame coloration, that are revealed by the application of heat
Word Origin
C19: from pyro- + -gnostics, from Greek gnōsis knowledge
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
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