pneu·mo·nia (n-mōnyə, ny-)
An acute or chronic disease marked by inflammation of the lungs, usually caused by a bacterium, virus, or other infectious agent.
[New Latin, from Greek pneumoniā, lung disease, alteration (influenced by pneuma, breath) of pleumoniā, from pleumōn, lung; see pleu- in the Appendix of Indo-European roots.]
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