Definitions for "Systema"
This is an art of Russian origin, It has no pre-defined moves, kata, rankings, or sport application It  works instead on the basis of the breathing, movement, form and lastly technique.
Systema (Russian: Система, "The System") is a Russian martial art. It is designed to be highly adaptive and practical, training using drills and sparring instead of set kata. It focuses mainly on the six body levers (elbows, neck, knees, waist, ankles, and shoulders), while also teaching pressure point application and takedowns.