Where does “सैन्य” come from?

सैन्य (Sanskrit) comes from Sanskrit सेना, from Proto-Indo-Iranian sáynaH — army, troop; horde, band.

Ancestry of “सैन्य”, step by step

StepLanguageWordMeaning
1Sanskritसेनाan army, armament, battle-array, armed force;...
2Proto-Indo-IraniansáynaHarmy, troop; horde, band

Words derived from “सैन्य

Every word from Proto-Indo-Iranian sáynaHEvery word from Sanskrit सेना