'pressure-generated' originates from the combination of 'pressure' and 'generate,' where 'pressure' refers to the force exerted on an object and 'generate' means to produce or create.

'pressure' and 'generate' were combined in modern English to form the compound adjective 'pressure-generated.'

Initially, 'pressure' and 'generate' had separate meanings, but when combined, they evolved to describe something produced by pressure.