The Collaborative International Dictionary
Pyrognostic
Pyrognostic \Pyr`og*nos"tic\, a. [Pyro- + Gr. ? to know.] (Min.) Of or pertaining to characters developed by the use of heat; pertaining to the characters of minerals when examined before the blowpipe; as, the pyrognostic characters of galena.
Wiktionary
pyrognostic
a. (context dated English) of, relating to, or revealed by pyrognostics