'rationally-structured' originates from the combination of 'rationally' and 'structured'. 'Rationally' comes from the Latin 'rationalis', meaning 'reasonable', and 'structured' comes from the Latin 'structura', meaning 'a fitting together, building'.

'Rationally' evolved from the Latin 'rationalis' through Old French 'rationel', and 'structured' evolved from the Latin 'structura' through Old French 'structure'.

Initially, 'rationally' meant 'in a reasonable manner', and 'structured' meant 'built or arranged'. Together, they convey the idea of being logically organized.