Medical Dictionary


noun ef·fu·sion \i-ˈfyü-zhən, e-\

Medical Definition of EFFUSION

a :  the escape of a fluid from anatomical vessels by rupture or exudation b :  the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas
:  the fluid that escapes by extravasation—see pleural effusion


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