オペレーションシステム
operēshonshisutemu
1. operating system
Noun
#190123
1. operating system
1. system
1. operation
1. operation
1. automatic lock
2. automatic door-locking system
1. systems
1. geographic information system; GIS
1. filing system
1. It is not a system.; It’s not the system.
1. It wasn't a system.; It wasn't the system.