pyrognostics

[ pahy-ruhg-nos-tiks ]
/ ˌpaɪ rəgˈnɒs tɪks /

plural noun

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.

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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. 2020

British Dictionary definitions for pyrognostics

pyrognostics
/ (ˌpaɪrɒɡˈnɒstɪks) /

pl n

the characteristics of a mineral, such as fusibility and flame coloration, that are revealed by the application of heat

Word Origin for pyrognostics

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