noun, noun which may take the genitive case particle 'no'
non-resident; transient; not permanently stationed
Computing term for programs, processes, or data that are not permanently loaded in memory; also used in general contexts for personnel or objects that are not always present.
This antivirus software is non-resident, so it only runs when needed.
Non-resident staff come to the office only once a week.
非常駐 means not being permanently stationed (e.g. a program that loads only when needed), the direct opposite of 常駐.
Formed from the prefix 非- (non-) and 常駐 (permanent presence/residency).