International Style

the general form of architecture developed in the 1920s and 1930s by Gropius, Le Corbusier, Mies van der Rohe, and others, characterized by simple geometric forms, large untextured, often white, surfaces, large areas of glass, and general use of steel or reinforced concrete construction.

(sometimes lowercase) any of various 20th-century styles in art, as cubism or abstract expressionism, that have gained wide currency in Europe, the Americas, Asia, and elsewhere.