'atomistically' originates from English, specifically from the adjective 'atomistic' (formed from the noun 'atom' plus the suffix '-istic' and the adverbial ending '-ally'), where the root 'atom' ultimately derives from Greek 'atomos'.

'atomistically' changed from the adjective 'atomistic' combined with the adverbial suffix '-ally'; 'atomistic' in turn developed from the noun 'atom' (from Greek 'atomos') through Latin and Middle English usage, eventually producing the modern English adverb 'atomistically'.

Initially the Greek root 'atomos' meant 'uncuttable' or 'indivisible'; over time this concept evolved into 'atomistic' meaning 'relating to atoms or to analysis in terms of discrete parts', and 'atomistically' now means 'in a reductionist or part-focused manner'.