'systematically-reviewed' originates from the combination of 'systematic' and 'reviewed', where 'systematic' comes from the Greek word 'sustēmatikos', meaning 'pertaining to a system', and 'reviewed' is derived from the Latin 'revidere', meaning 'to see again'.

'Systematic' evolved from the Greek 'sustēmatikos' through Latin 'systematicus', while 'reviewed' transformed from the Latin 'revidere' to the Old French 'reviser', eventually becoming the modern English 'review'.

Initially, 'systematic' meant 'pertaining to a system', and 'reviewed' meant 'to see again'. Over time, 'systematically-reviewed' evolved to mean 'examined in a methodical manner'.