- a style of modern architecture characterized by boxlike structure, little or no decoration, and smooth, flat surfaces of stone, concrete, glass, etc.
- a style of painting of the 14th and 15th cent., characterized by realistic detail and the effect of light on the subject
See International Style in American Heritage Dictionary 4
or International Style noun
An influential modernist style in architecture that developed in Europe and the United States in the 1920s and 1930s, characterized chiefly by regular, unadorned geometric forms, open interiors, and the use of glass, steel, and reinforced concrete.