(also Art Deco ) / ˌɑːt ˈdekəʊ; NAmE ˌɑːrt ˈdekoʊ/ noun
[ U ] a popular style of decorative art in the 1920s and 1930s that has geometric shapes with clear outlines and bright strong colours
For more information see the Cultural Guide
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WORD ORIGIN
1960s: shortened from French art décoratif decorative art, from the 1925 Exposition des Arts décoratifs in Paris.