effusion

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act or an instance of effusing.
• noun Liquid or other matter poured forth.
• noun An unrestrained outpouring of feeling, as in speech or writing.
• noun The seeping of serous, purulent, or bloody fluid into a body cavity or tissue.
• noun The effused fluid.

from The Century Dictionary.

• noun The act of pouring out, literally or figuratively; a shedding forth; an outpour: as, the effusion of water, of blood, of grace, of words, etc.
• noun That which is poured out; a fluid, or figuratively an influence of any kind, shed abroad.
• noun Specifically An outpour of thought in writing or speech; a literary effort, especially in verse: as, a poetical effusion: commonly used in disparagement.
• noun In pathology, the escape of a fluid from the vessels containing it into a cavity, into the surrounding tissues, or on a free surface: as, the effusion of lymph.
• noun [ML. effusio(n-), tr. of Gr. ῤν/σις.] That part of the constellation Aquarius (which see) included within the stream of water. It contains the star Fomalhaut, now located in the Southern Fish.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act of pouring out.
• noun That which is poured out, literally or figuratively.
• noun 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.
• noun The liquid escaping or exuded.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun an outpouring of liquid
• noun by extension an outpouring of speech or emotion
• noun medicine the seeping of fluid into a body cavity; the fluid itself

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun flow under pressure
• noun an unrestrained expression of emotion