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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
An Americanism dating back to 1960-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for clean room
Historical Examples
  • But a clean room may abound in virtue as well as an untidy one.

    A Little Girl in Old Philadelphia

    Amanda Minnie Douglas
  • They entered the convent, and found a neat, clean room of eight beds.

    Young Hilda at the Wars

    Arthur Gleason
  • A bare enough room, certainly, not even a bit of carpet laid before the bed, but it was a clean room.

    Ester Ried Yet Speaking Isabella Alden
  • Such a thing as a clean room, a hot steak, or an answered bell were not to be bought by flagrant bribery.

  • Having thus spoken, she conducted the old man into the small but clean room.

  • 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 ushered into a clean room, furnished with a tolerable library of orthodox volumes.

  • At the end of the meal they carried out tables and all, and the drinking-horns went round in a clean room.

    Viking Tales Jennie Hall
  • 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 was a quiet, clean room in a second-rate hotel, for which he paid twelve dollars a week.

    Hope Mills Amanda M. Douglas
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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