Simple Definition of emphysema

from our Learner's Dictionary

emphysema

noun

ˌɛmfəˈziːmə How to pronounce emphysema (audio)
British
ˌɛmfəˈsiːmə How to pronounce emphysema (audio)
medical : a disease in which the lungs become stretched and breathing becomes difficult

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“Emphysema.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/emphysema. Accessed 15 Apr. 2026.

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