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Note:  Do not rely on this information. It is very old.

OEdema

OEdema is derived from a Greek word signifying "a swelling," and is applied to the condition in which there is an effusion of serous fluid into the connective tissue spaces beneath the skin; e.g. oedema of the eyelids, or oedema of a limb due to the blocking of a vein. Oedema of the lungs is the condition in which the passages of the lung become choked by the exudation of serous fluid, and cedemaglottidis is the expression used to designate the effusion of fluid into the tissues beneath the mucous membrane of the glottis, leading to swelling and to obstruction of the passage of air through that aperture. [Dropsy.]