pneu·​mo·​nec·​to·​my ˌnü-mə-ˈnek-tə-mē How to pronounce pneumonectomy (audio)
plural pneumonectomies
: excision of an entire lung or of one or more lobes of a lung

Examples of pneumonectomy in a Sentence

Recent Examples on the Web According to a 2018 study published in the Journal of Thoracic Diseases, the five-year survival rate of people who undergo lobectomy is double that of those who undergo pneumonectomy (31.5% vs. 15.6%, respectively)1515 How a person is treated after surgery also influences survival times. Sanja Jelic, Verywell Health, 22 Sep. 2023 Even so, pneumonectomy cannot be avoided in certain cases, particularly in people over 70 in whom the surgery offers a higher chance of cure.14 One study found that the 90-day mortality rate for pneumonectomy was 12.6% (or roughly one of every 12 surgeries). Sanja Jelic, Verywell Health, 22 Sep. 2023 This is especially true when comparing lobectomy to pneumonectomy. Sanja Jelic, Verywell Health, 22 Sep. 2023 The use of lobectomy (in which a lobe of a lung is removed) tends to afford longer survival times than a pneumonectomy (in which an entire lung is removed). Lynne Eldridge, Verywell Health, 15 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'pneumonectomy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Greek pneumōn + International Scientific Vocabulary -ectomy

First Known Use

1890, in the meaning defined above

Time Traveler
The first known use of pneumonectomy was in 1890

Dictionary Entries Near pneumonectomy

Cite this Entry

“Pneumonectomy.” Dictionary, Merriam-Webster, Accessed 24 Feb. 2024.

Medical Definition


pneu·​mo·​nec·​to·​my ˌn(y)ü-mə-ˈnek-tə-mē How to pronounce pneumonectomy (audio)
plural pneumonectomies
: surgical excision of an entire lung or of one or more lobes of a lung

called also pneumectomy, pulmonectomy

compare segmental resection
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