cleanroom

• clean room, clean-room

clean +‎ room

cleanroom (plural cleanrooms)

1. 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.

   Synonym: white room

2. (attributive, chiefly computing) The method of copying a design by reverse engineering and then recreating it without infringing any copyrights.
3. (software engineering, attributive) Being or relating to a software development process intended to produce software with a certifiable level of reliability.

cleanroom (third-person singular simple present cleanrooms, present participle cleanrooming, simple past and past participle cleanroomed)

1. (transitive, chiefly computing) To copy (a design) by reverse engineering and then recreating it without infringing any copyrights.
   • 1990, InfoWorld, volume 13, numbers 1-8, page 40:

     Based on OSF's Motif, this technology was “clean roomed” and is not in violation of any Apple copyright or patent […]

• macrolone