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Entry 1 sense Webster, 1913

Pyrognostic

· Pyr·og·nos·tic · IPA
01 a. Of or pertaining to characters developed by the use of heat; pertaining to the characters of minerals when examined before the blowpipe; as…
  1. 1.
    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.(Min.)