'neurological' originates from the Greek word 'neuron,' meaning 'nerve,' and the suffix '-logical,' meaning 'pertaining to.'

'neurology' transformed from the Greek word 'neuron' and the suffix '-logia,' eventually becoming the modern English word 'neurology' and its adjective form 'neurological.'

Initially, it meant 'pertaining to nerves,' and this meaning has largely remained the same in modern usage.