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adj. Of or pertaining to the pleura, the smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax.

"To prevent which, I presently made a large orifice in the vein of the left arm, whence I drew twenty ounces of blood; which I expected to have found extremely sizy and glutinous, or indeed coagulated, as it is in pleuretic complaints; but, to my surprize, it appeared rosy and florid, and its consistency differed little from the blood of those in perfect health."

pleura