One of the mysteries of the English language finally explained.
1Change of the colour of hair, skin, etc. Now rare.
2Histology and Biology= "metachromasia".
Late 19th century (in an earlier sense). From meta- + chromatism; in later use in sense 1 probably after French métachromatisme, although in quot. 1876 at sense 1a apparently an independent formation.
In this article we explore how to impress employers with a spot-on CV.