reticular activating system the network in the reticular formation that serves an alerting or arousal function
reticuloendothelial system a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells
recording system audio system for recoding sound
lubricating system mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings
disk operating system an operating system that is on a disk
force-feed lubricating system mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings
ventilating system a mechanical system in a building that provides fresh air
color television system a television that transmits images in color
uninominal voting system based on the principle of having only one member (as of a legislature) selected from each electoral district
receiving system set that receives radio or tv signals
operating system (computer science) software that controls the execution of computer programs and may provide various services
refrigeration system a cooling system for chilling or freezing
articulatory system the system of joints in the body
reproductive system organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring
scrutin uninominal voting system based on the principle of having only one member (as of a legislature) selected from each electoral district
colour television system a television that transmits images in color
articulate express or state clearly
quadraphonic system a stereophonic sound recording or reproducing system using four separate channels
quadriphonic system a stereophonic sound recording or reproducing system using four separate channels
accounting system a bookkeeper's chronological list of related debits and credits of a business; forms part of a ledger of accounts