Category:Pneumatics

Pneu*mat"ics, n. Etym: [cf. F. pneumatique.]

1. That branch of science which treats of the mechanical properties Of air and other elastic fluids, as of their weight, pressure, Elasticity, etc. See mechanics.

2. (philos. & theol.)

Defn: the scientific study or knowledge of spiritual beings and their Relations to god, angels, and men.