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Definition of Pyrognostics
1. n. pl. The characters of a mineral observed by the use of the blowpipe, as the degree of fusibility, flame coloration, etc.
Definition of Pyrognostics
1. Noun. (dated) The characteristics of a substance, especially of a mineral or metal salt, that are revealed by heat, especially by the use of a blowpipe and a charcoal block. ¹
¹ Source: wiktionary.com