| Term | Definition | 
  
    | Arcs | Shaped like a curve or arch. | 
  
    | Avant-garde | Avant-garde represents a pushing of the boundaries of what is accepted as the norm, or the status quo, primarily in the cultural realm. | 
  
    | Cylindrical | Of, relating to, or having the shape of a cylinder, especially of a circular cylinder. | 
  
    | Environment | Refers to a complex of surrounding circumstances, conditions, or influences in which a thing is situated or is developed. | 
  
    | Frank Lloyd Wright | One of the world's most prominent and influential architects. He  developed a series of highly individual styles over his extraordinarily  long architectural career (1887–1959) and influenced  the entire course of American architecture and building. | 
  
    | Futuristic | Ahead of the times; advanced. | 
  
    | Museum of Non-Objective Painting | Put together by Solomon R. Guggenheim and Hilla Rebay, his personal curator and the museum's first director. Opened on East 54th Street in Manhattan in 1939. | 
  
    | Niches | Recesses in a wall, as for holding a statue or urn. | 
  
    | Solomon R. Guggenheim Foundation | A nonprofit corporation founded in 1937 by philanthropist Solomon R. Guggenheim and artist Hilla von Rebay. Its primary accomplishment has been the construction of a number of international museums. | 
  
    | Symphony | Anything characterized by a harmonious combination of elements. | 
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