1. Acute inflammation of the lungs.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• pneumonis,
• pnumonea,
• pneomnia,
• pneumomia,
• pnumonia,
• phneumoonia,
• penumonia,
• peumonia,
• phnemonia,
• pnemonic,
• pheumonia,
• pneumania,
• pneumonias,
• phenumonia,
• phneumonia,
• pneuomonia,
• pnemonioa,
• pnewmonia,
• phneumonea,
• puemonia

• pneumonitis,
• pneumonic.

The adjective form of the word "pneumonia" is "pneumonic".

The plural of the "pneumonia" can be the "pneumonias".

The singular of the "pneumonia" can be the "pneumonia".