from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A room that is maintained to be free of contaminants, such as dust or bacteria, used in laboratory work and in the production of precision parts for electronic or aerospace equipment.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a room that is virtually free of dust or bacteria; used in laboratory work and in assembly or repair of precision equipment
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