'atomician' originates from English, specifically from the adjective 'atomic' (from Greek 'atomos'), combined with the English suffix '-ian' used to form nouns meaning 'person related to' or 'specialist in'.

'atomic' itself comes from Greek 'atomos' meaning 'uncut, indivisible' (a- 'not' + tomos 'cut'). The modern English adjective 'atomic' developed via New Latin and early modern scientific usage; the agentive noun-forming suffix '-ian' comes from Latin '-ianus' through Old French/English, producing 'atomician' as a coined specialist term in English.

Initially related to the concept of the 'indivisible' (from Greek 'atomos'), the root evolved to mean 'relating to atoms' in scientific contexts; 'atomician' has the specialized meaning 'a person who studies or works with atoms' in modern usage.