ultravacuum

ultravacuum

(ˌʌltrəˈvækjʊm; ˌʌltrəˈvækjʊəm)
n
1. (General Physics) an extremely high level of vacuum
2. (General Physics) a machine or device for creating such a vacuum
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The primary payloads for this mission were the Orbiting and Retrievable Far and Extreme Ultraviolet Spectrograph-Shuttle Pallet Satellite, a free-flying telescope to investigate rarely explored regions of the electromagnetic spectrum; and the Wake Shield Facility, a free-flying stainless-steel disk that generates an ultravacuum environment for growing advanced semiconductor thin films.