1610s, “the whole creation, the universe,” from late Latin systema “an arrangement, system,” from Greek systema “organized whole, body,” from syn- “together” + root of histanai “cause to stand” from Proto-Indo-European root *sta- “to stand”. Meaning “set of correlated principles, facts, ideas, etc.” first recorded 1630s. Meaning “animal body as an organized whole, sum of the vital processes in an organism” is recorded from 1680s (source: www.etymonline.com).
From Indo-European root *STA- expressing the idea of standing firm.
Etymosophy result: sturdy composition of elements.