n(y)üˈmad.iks, -atiks, -ēks sometimes nəˈm- noun plural but singular in construction
Etymology: pneumat- + -ics
1. : a branch of mechanics that deals with the mechanical properties of gases (as weight, pressure, elasticity) — compare aerodynamics , aeromechanics , aerostatics
2.
[New Latin pneumatica, from feminine of Latin pneumaticus pneumatic + English -s ]
: pneumatology