The term PART OF CBS can be solved using the following crossword solutions: SYSTEM (6 letters), SYST (4 letters), ESS (3 letters), and SYS (3 letters). SYSTEM stands for SYSTEM Software, which is a type of computer software that provides an interface between hardware and user applications. SYST stands for Systematic, which means organized or methodical. ESS stands for Essential, which means absolutely necessary. Lastly, SYS stands for SYSTEM, which is a set of components that work together to achieve a common goal.