Source : Webster's Revised Unabridged Dictionary (1913)

Pneumonia \Pneu*mo"ni*a\ (n[-u]*m[=o]"n[i^]*[.a]), n. [NL., fr.
   Gr. pneymoni`a, fr. pney`mwn, pl. pney`mones the lungs, also,
   pley`mwn, which is perh. the original form. Cf. {Pneumatio},
   {Pulmonary}.] (Med.)
   Inflammation of the lungs.

   Note:

   {Catarrhal pneumonia}, or {Broncho-pneumonia}, is
      inflammation of the lung tissue, associated with catarrh
      and with marked evidences of inflammation of bronchial
      membranes, often chronic; -- also called {lobular
      pneumonia}, from its affecting single lobules at a time.
      

   {Croupous pneumonia}, or ordinary pneumonia, is an acute
      affection characterized by sudden onset with a chill, high
      fever, rapid course, and sudden decline; -- also called
      {lobar pneumonia}, from its affecting a whole lobe of the
      lung at once. See under {Croupous}.

   {Fibroid pneumonia} is an inflammation of the interstitial
      connective tissue lying between the lobules of the lungs,
      and is very slow in its course, producing shrinking and
      atrophy of the lungs.