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2 definitions found
 for effusion
From The Collaborative International Dictionary of English v.0.48 :

  Effusion \Ef*fu"sion\, n. [L. effusio: cf. F. effusion.]
     1. The act of pouring out; as, effusion of water, of blood,
        of grace, of words, and the like.
        [1913 Webster]
              To save the effusion of my people's blood. --Dryden.
        [1913 Webster]
     2. That which is poured out, literally or figuratively.
        [1913 Webster]
              Wash me with that precious effusion, and I shall be
              whiter than sow.                      --Eikon
        [1913 Webster]
              The light effusions of a heedless boy. --Byron.
        [1913 Webster]
     3. (Pathol.)
        (a) The escape of a fluid out of its natural vessel,
            either by rupture of the vessel, or by exudation
            through its walls. It may pass into the substance of
            an organ, or issue upon a free surface.
        (b) The liquid escaping or exuded.
            [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: an unrestrained expression of emotion [syn: effusion,
           gush, outburst, blowup, ebullition]
      2: flow under pressure

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