empyema
em·pyema
noun
1.
a collection of pus in a body cavity (especially in the lung cavity)
Origin
From Ancient Greek ἐμπύημα (empúēma, “gathering, abscess”).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.