Pneumatics
Pronunciation : Pneu*mat"ics
Part of Speech : n.
Etymology : [Cf. F. pneumatique.]
Definition : 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.
Source : Webster's Unabridged Dictionary, 1913