
1) Blowup 2) Ebullition 3) Expression 4) Flow under pressure 5) French word used in English 6) Gush 7) Manifestation 8) Outburst 9) Outpouring 10) Reflection 11) Reflexion 12) Something that is effused 13) The fluid that escapes 14) Unrestrained flow 
Found on 
https://www.crosswordclues.com/clue/effusion

1) Ebullition 2) Egress 3) Ejection 4) Outburst 5) Outpour 6) Speech 7) Xcretion 
Found on 
https://www.crosswordclues.com/clue/effusion

- an unrestrained expression of emotion
 - flow under pressure
 
Found on 

effuse. Compare with diffusion and diffraction. Gas molecules in a container escape from tiny pinholes into a vacuum with the same average velocity they have inside the container. They also move in straight-line trajectories through the pinhole. 
Found on 
http://antoine.frostburg.edu/chem/senese/101/glossary/e.shtml

 ==Application to thermodynamics== This equation is known as Graham`s law of effusion. The effusion rate for a gas depends directly on the average velocity of its particles. Thus, the faster the gas particles are moving, the more likely they are to pass through the effusion orifice. A figure of Graham`s law of effusion linked below shows the rate.....
Found on 
http://en.wikipedia.org/wiki/Effusion

Accumulation of fluid within a cavity
Found on 
http://orthopaedics.org.uk/service/glossary/

• (n.) The liquid escaping or exuded. • (n.) The act of pouring out; as, effusion of water, of blood, of grace, of words, and the like. • (n.) That which is poured out, literally or figuratively. • (n.) The escape of a fluid out of its natural vessel, either by rupture of the vessel, or by exudation through its walls. It may pas...
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http://thinkexist.com/dictionary/meaning/effusion/

(L. effusio a pouring out) the escape of fluid into a part or tissue, as an exudation or a transudation.
Found on 
http://users.ugent.be/~rvdstich/eugloss/DIC/dictio28.html

(from the article `gas`) Consider the system described above in the calculation of gas pressure, but with the area in the container wall replaced with a small hole. The ...
Found on 
http://www.britannica.com/eb/a-z/e/13

An abnormal collection of fluid in hollow spaces or between tissues of the body. For example, a pleural effusion is a collection of fluid between the two layers of membrane covering the lungs.
Found on 
http://www.cancer.gov/dictionary?expand=E

Movement of gas molecules through a small opening.
Found on 
http://www.chemicalglossary.net/definition/708-Effusion

Accumulation of fluid, in various spaces in the body, or the knee itself. Commonly, the knee has an effusion after an injury.
Found on 
http://www.encyclo.co.uk/local/20906

The escape of fluid into a part or tissue, as an exudation or a transudation. ... Origin: L. Effusio = a pouring out ... (18 Nov 1997) ... 
Found on 
http://www.encyclo.co.uk/local/20973

(ә-fu´zhәn) escape of a fluid into a part; exudation or transudation. an exudate or transudate. chyliform effusion see chylothorax. chylous effusion see chylothorax. pericardial effusion the accumula...
Found on 
http://www.encyclo.co.uk/local/21001

Build up of fluid within or around an organ or structure e.g. - Pleural effusion - a build up of fluid in the pleural cavity - Joint effusion - a build up of fluid in a joint - Effusion of the brain - see below
Found on 
http://www.encyclo.co.uk/visitor-contributions.php
Ef·fu'sion  noun [ Latin 
 effusio : confer French 
 effusion .] 
 1.  The act of pouring out; as, 
 effusion of water, of blood, of grace, of words, and the like. « To save the 
 effusion of my people's blood.» 
 Dryden.   2.  That which is poured ou...
Found on 
http://www.encyclo.co.uk/webster/E/12

The escape of fluid (eg. pus, blood, etc) into a body cavity.
Found on 
http://www.gadsbywicks.co.uk/uploaded/3822.pdf

The escape of fluid from the blood vessels or lymphatics into the tissues or a cavity.
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http://www.lgdalliance.org/research/glossary-of-medical-terms/

Effusion: Too much fluid, an outpouring of fluid. A hemorrhagic effusion is one that has blood within the fluid. A pericardial effusion is an outpouring of fluid within the fibrous sac (the pericardium) that surrounds the heart. The lungs are covered by two-layered membranes which are called the pleura. A pleural effusion involves the presence of a...
Found on 
http://www.medterms.com/script/main/art.asp?articlekey=7016

Movement of gas molecules through a small opening.
Found on 
http://www.shodor.org/UNChem/glossary.html

Fluid escaping into a body cavity or tissue
Found on 
http://www.thehorse.com/Glossary.xhtml?L=E

Movement of gas molecules through a small opening. They also move in straight-line trajectories through the hole. 
Found on 
https://www.encyclo.co.uk/local/20687
gush noun an unrestrained expression of emotion
Found on 
https://www.encyclo.co.uk/local/20974

the act of effusing or pouring forth. · something that is effused. · an unrestrained expression, as of feelings: poetic effusions. · · the escape of a fluid from its natural vessels into a body cavity. · the fluid that escapes.
Found on 
https://www.infoplease.com/dictionary/effusion

a collection of fluid in a closed cavity.
Found on 
https://www.stanfordchildrens.org/en/topic/default?id=glossary---cardiovasc
  No exact match found.