1
a
: one of the usually paired compound saccular thoracic organs that constitute the basic respiratory organs of an air-breathing vertebrate
b
: any of various respiratory organs of invertebrates
2
a
: a device enabling individuals abandoning a submarine to rise to the surface
b
: a mechanical device for regularly introducing fresh air into and withdrawing stale air from the lung : respirator compare iron lung
Examples of lung in a Sentence
He filled his lungs with the clean. fresh air.
Recent Examples on the Web
If the infection is not contained by the body’s immune response, the bacteria destroys lung tissue which can trigger chest pain and coughing up of mucus or blood.
—
Chase Hunter, Mercury News, 31 Jan. 2026
His attorney sought a sentence of six years, noting that Grayson has late stage colon cancer that has spread to his liver and lungs.
—Arkansas Online, 30 Jan. 2026
Merck’s blockbuster drug Keytruda, an early immunotherapy that treats lung cancer and melanoma, among others, has $30 billion in annual sales.
—Amy Feldman, Forbes.com, 30 Jan. 2026
McCartney and Starr remain the only surviving members after Lennon’s 1980 assassination and Harrison’s 2001 death from lung cancer.
—Lily Ford, HollywoodReporter, 30 Jan. 2026
See All Example Sentences for lung
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Chase Hunter, Mercury News, 31 Jan. 2026
His attorney sought a sentence of six years, noting that Grayson has late stage colon cancer that has spread to his liver and lungs.
—Arkansas Online, 30 Jan. 2026
Merck’s blockbuster drug Keytruda, an early immunotherapy that treats lung cancer and melanoma, among others, has $30 billion in annual sales.
—Amy Feldman, Forbes.com, 30 Jan. 2026
McCartney and Starr remain the only surviving members after Lennon’s 1980 assassination and Harrison’s 2001 death from lung cancer.
—Lily Ford, HollywoodReporter, 30 Jan. 2026
See All Example Sentences for lung
Cite this Entry
“Lung.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lung. Accessed 4 Feb. 2026.
Copy CitationKids Definition
lung
noun1
a
: one of the usually paired organs forming the special breathing structure of vertebrates that breathe air
b
: any of various respiratory organs of invertebrates
2
: a device (as an iron lung) to promote breathing and make it easier
Medical Definition
lung
noun1
a
: one of the usually two compound saccular organs that constitute the basic respiratory organ of air-breathing vertebrates, that normally occupy the entire lateral parts of the thorax and consist essentially of an inverted tree of intricately branched bronchioles communicating with thin-walled terminal alveoli swathed in a network of delicate capillaries where the actual gaseous exchange of respiration takes place, and that in humans are somewhat flattened with a broad base resting against the diaphragm and have the right lung divided into three lobes and the left into two lobes
b
: any of various respiratory organs of invertebrates
2
: a mechanical device for regularly introducing fresh air into and withdrawing stale air from the lungs : respirator see iron lung
lunged
adjective
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