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pyrognostics

[pahy-ruh g-nos-tiks]
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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

First recorded in 1840–50; pyro- + gnost(ic) + -ics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for pyrognostics

pyrognostics

pl n
  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