One of the mysteries of the English language finally explained.
Of a mineral: becoming incandescent when heated, especially to relatively low temperatures; of or relating to such behaviour.
Mid 19th century; earliest use found in Edinburgh New Philosophical Journal. From pyro- + ancient Greek γνώμη means of knowing, mark, token + -ic, after German pyrognomisch.
In this article we explore how to impress employers with a spot-on CV.