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clean room

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 of clean room
1960-65, Americanism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for clean room
Historical Examples
  • After the disappointments of the day, welcome once more, Charles, to the comforts of a clean room and a good fire.

    She Stoops to Conquer Oliver Goldsmith
  • We were ushered into a clean room, furnished with a tolerable library of orthodox volumes.

  • But a clean room may abound in virtue as well as an untidy one.

    A Little Girl in Old Philadelphia Amanda Minnie Douglas
  • That night he was put to bed in a clean room, and before he slept he prayed that he might never be homeless and friendless again.

    Tales from Dickens Charles Dickens and Hallie Erminie Rives
  • It were a cheery, clean room; and we were glad to sit down again, though I thought my legs would never bend at th' knees.

    Mary Barton Elizabeth Cleghorn Gaskell
  • It was a quiet, clean room in a second-rate hotel, for which he paid twelve dollars a week.

    Hope Mills Amanda M. Douglas
  • Such a thing as a clean room, a hot steak, or an answered bell were not to be bought by flagrant bribery.

  • We were in a room—a clean room, with ceiling and walls, open doorways, all just as they had been left.

  • A clean room, a hot dish for dinner, and a bottle of not absolutely poisonous wine, are all I want tonight.

    Little Dorrit Charles Dickens
  • We were shown at once into a clean room, and were soon surrounded by bustle and preparation for our comfort.

    In Indian Mexico (1908) Frederick Starr
clean room in Science
clean room
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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