pneumothorax
(noun) abnormal presence of air in the pleural cavity resulting in the collapse of the lung; may be spontaneous (due to injury to the chest) or induced (as a treatment for tuberculosis)
Source: WordNet® 3.1
pneumothorax (usually uncountable, plural pneumothoraxes or pneumothoraces)
(medicine) Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall.
• aerothorax
• aeropleura
Source: Wiktionary
Pneu`mo*tho"rax, n. Etym: [Gr. thorax.] (Med.)
Definition: A condition in which air or other gas is present in the cavity of the chest; -- called also pneumatothorax.
Source: Webster’s Unabridged Dictionary 1913 Edition
7 June 2025
(noun) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
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