abstract expressionism

from The American Heritage® Dictionary of the English Language, 4th Edition

• n. A school of painting that flourished after World War II until the early 1960s, characterized by the view that art is nonrepresentational and chiefly improvisational.

from Wiktionary, Creative Commons Attribution/Share-Alike License

• n. Alternative form of Abstract Expressionism.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• n. a New York school of painting characterized by freely created abstractions; the first important school of American painting to develop independently of European styles