The word 'system' entered English in the early 17th century from the Late Latin 'systema', which itself was borrowed from the Greek 'sustēma'. The Greek term derives from the verb 'sunistanai', meaning 'to combine, to set together', which is composed of 'sun-' (together) and 'histānai' (to cause to stand). Thus, the core logic embedded in the word is that of a whole "standing together" or being "composed" of unified parts. This ancient sense of an organized, composite entity directly informs all modern abstract meanings, from biological systems to political systems, all conceptualized as coordinated assemblies of interconnected components.

The word 'system' is a simplex loanword from Latin and Greek. It is not productively segmented into meaningful substrings in modern English spelling (e.g., 'sys' and 'tem' are not independent morphemes).