'systematically-chosen' originates from the combination of 'systematic' and 'chosen', where 'systematic' comes from the Greek 'sustēma' meaning 'organized whole', and 'chosen' is the past participle of 'choose', from Old English 'cēosan'.

'systematic' evolved from the Greek 'sustēma' through Latin 'systematicus', and 'chosen' from Old English 'cēosan', eventually forming the modern English term 'systematically-chosen'.

Initially, 'systematic' meant 'pertaining to a system', and 'chosen' meant 'selected', which together evolved to mean 'selected according to a system'.