EMPYEMA

empyema

(noun) a collection of pus in a body cavity (especially in the lung cavity)

Source: WordNet® 3.1

Etymology

Noun

empyema (plural empyemas or empyemata)

(medicine) A collection of pus within a naturally existing anatomical cavity (as opposed to an abscess, which occurs in a newly formed cavity).

Source: Wiktionary

Em`py*e"ma, n. Etym: [NL., fr. Gr. (Med.)

Definition: 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 Edition