Meaning of “pneumonia” in the English Dictionary

american-english dictionary

"pneumonia" in British English

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pneumonianoun [ U ]

uk /njuːˈməʊ.ni.ə/ us /nuːˈmoʊ.njə/

a serious illness in which one or both lungs become red and swollen and filled with liquid:

People who are bedridden can easily get pneumonia.
catch/get pneumonia informal

to make yourself ill by getting too cold:

She'll catch pneumonia going out without a coat in this weather!

(Definition of “pneumonia” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"pneumonia" in American English

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pneumonianoun [ U ]

us /nʊˈmoʊn·jə/

a serious illness in which one or both lungs become red and swollen and filled with liquid:

The patient died of pneumonia.

(Definition of “pneumonia” from the Cambridge Academic Content Dictionary © Cambridge University Press)