1. 
   Fainting
   Fainting (‘Syncope`) is a transient loss of consciousness with a resultant loss of postural tone caused by a temporary interruption of blood flow to the brain
   Found op http://www.dwp.gov.uk/medical/med_conditions/glossary.html
   
   
2. 
   Fainting
   Faint'ing noun Syncope, or loss of consciousness owing to a sudden arrest of the blood supply to the brain, the face becoming pallid, the respiration feeble, and the heat's beat weak. Fainting fit , a fainting or swoon; syncope. [ Colloq....
   Found op http://www.encyclo.co.uk/webster/F/3
   
   
3. 
   fainting
   <neurology, physiology> A form of syncope (fainting) that occurs as a part of a normal physiologic response to stress (often emotional stress). The individual becomes lightheaded, nauseated, flushed, feels warm and then may lose consciousness for several seconds. ... (27 Sep 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?fainting
   
   
4. 
   Fainting
   • (p. pr. & vb. n.) of Faint • (n.) Syncope, or loss of consciousness owing to a sudden arrest of the blood supply to the brain, the face becoming pallid, the respiration feeble, and the heat`s beat weak.
   Found op http://thinkexist.com/dictionary/meaning/fainting/
   
   
5. 
   fainting
   in physiology, loss of consciousness owing to a temporary decrease in the blood supply to the brain. See syncope.
   Found op http://www.britannica.com/eb/a-z/f/3
   
   
6. 
   fainting
   fainting or syncope (sing'kupē) , temporary loss of consciousness caused by an insufficient supply of oxygen to the brain. It can be concurrent with any serious disease or condition, such as heart failure, hypertension (high blood pressure), arrhythmia, hemorrhage, injury to the brain or o...
   Found op http://www.infoplease.com/ce6/sci/A0818134.html
   
   
7. 
   fainting
   Sudden, temporary loss of consciousness caused by reduced blood supply to the brain. It may be due to emotional shock or physical factors, such as pooling of blood in the legs from standing still for long periods
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0001219.html
   
   

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