'airmobile' originates from the combination of 'air' and 'mobile', where 'air' refers to the atmosphere and 'mobile' means capable of moving or being moved.

'airmobile' was formed in the mid-20th century to describe military units that could be transported by air, especially by helicopters.

Initially, it meant 'capable of being moved by air', and this meaning has largely remained the same in modern usage.