clean-room

clean room

noun
a room in which contaminants such as dust are reduced to a very low level by special procedures so that operations such as the manufacture and assembly of delicate equipment or the manipulation of biological materials can be performed effectively.

Origin:
1960–65, Americanism

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
clean room   (klēn)  Pronunciation Key 
A room that is maintained free of contaminants, such as dust or bacteria. Clean rooms are used in laboratory work and in the production of precision parts for electronic or aerospace equipment. Also called white room.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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