Dictionary

clean room

noun \ˈklēn-ˌrüm, -ˌrm\

: a room that is kept extremely clean so that certain products can be made in it

Full Definition of CLEAN ROOM

:  a room for the manufacture or assembly of objects (as precision parts) that is maintained at a high level of cleanliness by special means
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Examples of CLEAN ROOM

  1. The microchips are manufactured in a clean room.

First Known Use of CLEAN ROOM

1963

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