'aviation-fanatic' originates from the combination of 'aviation' and 'fanatic', where 'aviation' refers to the operation of aircraft and 'fanatic' means an extreme enthusiasm or zeal.

'aviation' comes from the Latin word 'aviatio', and 'fanatic' comes from the Latin word 'fanaticus', meaning 'inspired by a deity'.

Initially, 'fanatic' meant 'inspired by a deity', but over time it evolved into its current meaning of 'extreme enthusiasm'.