The crossword solutions for the term NETWORK: ABBR. are SYST (4 letters) and SYS (3 letters). The abbreviation SYST stands for System, which is a set of components that work together to achieve a common goal. System can also refer to a computer system, which is a combination of hardware and software that allows users to interact with a computer. The abbreviation SYS stands for Network, which is a group of two or more computers connected together to share resources and exchange data. Networks can be used to connect computers in a local area, such as a home or office, or they can be used to connect computers across the world.