(n) (comp) information system
(n) (comp) information literacy
(n) (col) kamikaze taxi (1960s term for taxis that fail to heed traffic regulations)
(n) control system
(n) political system
(n) oil shock
(n) rollercoaster
fair ride
thrill ride
(n) (comp) linear system
(n) interbank payments system
(n) (comp) intermediate system
IS
(n) super multi-shift (a kanji input method)
(n) (comp) vertex shader
(n) commuter rush
rush hour
(n) (comp) communication system
(n) (comp) quit signal
(n) (comp) transfer system
(n) electrical short circuit
(n) electronic shocks
(n) electric toothbrush
(n) Japan Series
(n) (comp) expert system
(n) immune system
(n) excavator
power shovel
digger
(n) (comp) level 1 cache
(n) art theater
art theatre
(n) (comp) RFC
(n) (comp) IRC
(n) (comp) ICQ
(n) fish gelatin
isinglass
(n) isostasy