Cloisonism from the French cloison, meaning 'partition'. A style of painting in which areas of pure colour are surrounded by narrow bands of black or grey. Looks like a cloisonne enamel decorations of metals. Although Gauguin took the credit for inventing the style, and most fully realised its possibilities, it was Emile Bernard who first showed it to Gauguin.
Cumming, Robert (2001). Art: A Field Guide (pg. 385). New York: Alfred A. Knopf.
Image Credit: Emile Bernard, Madeleine in the Bois d'Amour, 1888 (permanent collection of the Musee d'Orsay in Paris)