Empyema
Pronunciation : Em`py*e"ma
Part of Speech : n.
Etymology : [NL., fr. Gr. (Med.)
Definition : Defn: A collection of blood, pus, or other fluid, in some cavity of the body, especially that of the pleura. Dunglison.
Note: The term empyema is now restricted to a collection of pus in the cavity of the pleura.
Source : Webster's Unabridged Dictionary, 1913