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Definition of emphysema noun from the Oxford Advanced Learner's Dictionary

emphysema

noun
 
/ˌemfɪˈsiːmə/
 
/ˌemfɪˈsiːmə/
[uncountable] (medical)
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  1. a condition that affects the lungs, making it difficult to breathe
    Word Originmid 17th cent. (originally referring to a condition where air is abnormally present in the body tissues): via late Latin from Greek emphusēma, from emphusan ‘puff up’.
See emphysema in the Oxford Advanced American Dictionary
pity
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