cleanroom

noun

1. 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.

2. 2

   Being or relating to the method of copying a design by reverse engineering and then recreating it without infringing any copyrights.

3. 3

   Being or relating to a software development process intended to produce software with a certifiable level of reliability.