'aseismatic' originates from Greek, specifically from the elements 'a-' (privative) and 'seismos' (σεισμός) meaning 'a shaking, earthquake', combined with the adjectival suffix '-ic'.

'aseismatic' entered English via New Latin/Neo-Latin formations (for example New Latin 'aseismaticus') derived from Greek 'aseismatikos' and was adopted into English in technical usage related to geology and engineering.

Initially and historically it meant 'not shaken by earthquakes' or 'resistant to earthquakes'; this core meaning has been preserved in modern usage, typically in technical contexts describing structures or zones.