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Wiktionary
cleanroom

n. A room or environment that is controlled in such a way as to minimize airborne particulate matter, typically for the purpose of fabricating sensitive electronic or other devices.

Wikipedia
Cleanroom

A cleanroom or clean room is an environment, typically used in manufacturing, including of pharmaceutical products or scientific research, with a low level of environmental pollutants such as dust, airborne microbes, aerosol particles, and chemical vapors. More accurately, a cleanroom has a controlled level of contamination that is specified by the number of particles per cubic meter at a specified particle size. To give perspective, the ambient air outside in a typical urban environment contains 35,000,000 particles per cubic meter in the size range 0.5 μm and larger in diameter, corresponding to an ISO 9 cleanroom, while an ISO 1 cleanroom allows no particles in that size range and only 12 particles per cubic meter of 0.3 μm and smaller.

Usage examples of "cleanroom".

The fake Kirk swaggered in, wearing the protective cleanroom suit he wore almost all the time now.

Marcus reached into the test chamber and pulled out the cleanroom suit stuffed full of meat.

Carol held her breath, knowing that the cleanroom suits pulled air out of the atmosphere and filtered it.

They obviously didn't want to make her sick again, so they conferred with her infrequently, always encased in their cleanroom suits.

Within this cleanroom were smaller cleanrooms of transparent aluminum, where robots moved with harmonic ease, shuffling wafers of microchips in and out of reactors and furnaces.

I ordered Saduk to conduct Lieutenant Worf and Counselor Troi through the cleanrooms as soon as the danger passed.

Official records of all the other departments and people who used the cleanrooms would have to wait for later.

I’ve delivered every record, every lab report, every maintenance schedule, and I’ve shut down the cleanrooms for an unconscionable length of time.

If the cleanrooms are breached, that disease will be rampant throughout the ship.

Employees coming into the cleanroom entered through the air shower, to his left, but those going out made their way through two sets of doors directly into the changing room.

Thanks to them, the mysteries of the cleanroom and ultraclean manufacturing techniques were revealed to me and, I hope, to you.