'chronologic' originates from Greek-derived elements used in English, specifically from Greek 'chronos' and Greek-derived suffix '-logikos' (via Latin/Modern formation), where 'chron-' meant 'time' and 'logikos' meant 'pertaining to speech, study, or reason'.

'chronologic' developed as an English formation influenced by the noun 'chronology' (from Greek 'chronologia' via Latin/Medieval Latin), and by the adjective-forming element '-logic'/'-logical' in Modern English, yielding the adjective 'chronologic' (and the more common 'chronological').

Initially derived from roots meaning 'time' + 'study/pertaining to', it has consistently meant 'relating to the order of time' and has retained that core sense in modern usage.