'neuronal' originates from the word 'neuron', which comes from the Greek word 'neûron', meaning 'sinew' or 'nerve'.

'neûron' transformed into the Latin word 'neuron', and eventually became the modern English word 'neuron', with 'neuronal' as its adjective form.

Initially, it referred to 'nerve' or 'sinew', but over time it evolved to specifically refer to the cells of the nervous system.