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vasovagal syncope

noun
  1. a faint brought on by excessive activity of the vagus nerve, causing the heart to slow and the blood pressure to fall. It can be caused by fear, choking, or stomach cramps and has no lasting effects
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

vasovagal syncope in Medicine

vasovagal syncope

n.
  1. vagal attack