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Definition of Pleural space
1. Noun. The small potential space between the parietal and visceral layers of the pleura.
Generic synonyms: Space
Medical Definition of Pleural space
1. Although reference is often made to the pleural space (one dictionary defines pleural effusion as the presence of fluid in the pleural space ), there is normally only a small amount of fluid between the two layers of the pleura. (12 Dec 1998)