Initialism of part number. / (medicine) Abbreviation of practical nurse. / (Malaysia, politics, uncountable) Initialism of Perikatan Nasional (“National Alliance”).

Initialism of peripheral nervous system. / Initialism of peripheral nervous stimulation, the potential side effect of fast magnetic field changes during MRI procedures.

Initialism of National Council Licensure Examination for Practical Nurses.

(music) A neume. / The spirit or soul. / (Gnosticism) One of three levels of a human being, the spirit, along with the body and soul.

(dated) A vehicle, such as a bicycle, whose wheels are fitted with pneumatic tyres.

Of, relating to, or resembling air or other gases / Of or relating to pneumatics / Powered by, or filled with, compressed air / (zoology) Having cavities filled with air

Initialism of personal navigation assistant. / (biochemistry) Initialism of peptide nucleic acid. / (pathology) Initialism of pulmonary nodular amyloidosis.

Initialism of Polish National Alliance. / (in the Philippines) Initialism of Philippine News Agency.

The system on military aircraft that use either or some combination of both hydraulic and pneumatic systems. / The science of fluids made of both gas and liquid.

Any device which generates or is powered by compressed air