We don't have synonyms for systema yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are system, System and systems.
(n) :
A Russian martial art, first appearing in the 1990s, involving a wide variety of fighting styles, including hand-to-hand combat, grappling, knife-fighting and firearms (with the specific elements usually dictated by the individual school).
(n) :
A Russian martial art, first appearing in the 1990s, involving a wide variety of fighting styles, including hand-to-hand combat, grappling, knife-fighting and firearms (with the specific elements usually dictated by the individual school).