polychromismn.
/ˌpɒlɪˈkrəʊmɪz(ə)m/, U.S. /ˌpɑliˈkroʊmɪz(ə)m/ now rare.
= polychromatism n.
ΘΚΠ
the world > matter > colour > variegation > [noun] > many colours
multicolour1842
polychromea1844
polychromatism1860
polychromism1903
multicolouredness1953
1903 Amer. Naturalist 37 295 (title) Albinism, partial albinism and polychromism in hag-fishes.
1933 J. F. Thorpe & R. P. Linstead Synthetic Dyestuffs (ed. 7) viii. 72 Polychromism..is the name assigned to the phenomenon of colour variation in salts.
1954 Amer. Antiq. 20 14/1 Polychrome painting with from four to six colors, occasionally even more. They are the only Peruvian styles with this degree of polychromism.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1903