pneumatic
air-powered / compressed air
Adjective
In modern technical discourse, this term evokes images of industrial power, hissing valves, and high-pressure systems. It suggests a specific type of mechanical efficiency that relies on the compressibility of air to transmit force, distinguishing it from hydraulic systems that use incompressible liquids.
In a theological or philosophical context, the word shifts toward the ethereal. It describes a state of being governed by the spirit rather than the flesh, often appearing in early Christian texts to differentiate between the carnal and the divine.