'routinely-checked' originates from the combination of 'routine' and 'check', where 'routine' comes from French 'routine', meaning 'a regular course', and 'check' from Old French 'eschequier', meaning 'to inspect'.

'routine' evolved from the French word 'routine', and 'check' from the Old French 'eschequier', eventually forming the modern English term 'routinely-checked'.

Initially, 'routine' meant 'a regular course', and 'check' meant 'to inspect'. Together, they evolved to mean 'regularly inspected'.