'asepticized' ultimately derives from the English verb 'asepticize' (formed from the adjective 'aseptic' + the verb-forming suffix '-ize'), where 'aseptic' comes via New Latin from Greek elements 'a-' + 'septikos'; 'a-' meant 'not' and 'septikos' meant 'putrefactive/causing decay'.

'aseptic' entered English from New Latin/Greek 'aseptikos'; the verb 'asepticize' was later formed in English by adding '-ize' to 'aseptic', and 'asepticized' is the past/past-participle form that developed accordingly.

Initially related to the idea of being 'not putrefied' or 'preventing decay', the term evolved into the technical sense 'to render free from pathogenic microorganisms', which is the present usage of 'asepticize/asepticized'.