Refers to the style predominently of architecture and the decorative arts, widely disseminated in Europe and the United States in the 1920s and 1930s, which became popular after the Exposition Internationale des Arts Décoratifs et Modernes in Paris in 1925. The style is characterized by a synthesis of industrial and fine arts materials used to create a wide variety of both man-made and mass-produced objects, often with an emphasis on rectilinear motifs, vibrant colors, and elegant, abstracted, simplified forms.
Source: AAT
http://vocab.getty.edu/page/aat/300021426
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