metachromatismyoudaoicibaDictYouDict[metachromatism 词源字典]
"Change of the colour of hair, skin, etc. Now rare", Late 19th cent. From meta- + chromatism; in later use in sense 1 probably after French métachromatisme, although in quot. 1876 at sense 1b apparently an independent formation.[metachromatism etymology, metachromatism origin, 英语词源]
parachromatismyoudaoicibaDictYouDict
"Colour blindness", Mid 19th cent.; earliest use found in Richard Taylor (?1805–1873).