hyperventilate meaning, hyperventilate definition | English Cobuild dictionary

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  ( hyperventilates    3rd person present)   ( hyperventilating    present participle)   ( hyperventilated    past tense & past participle  ) If someone hyperventilates, they begin to breathe very fast in an uncontrollable way, usually because they are very frightened, tired, or excited.      verb  
I hyperventilate when they come near me with the needle.      V  
  hyperventilation      n-uncount  
Several notable researchers are studying the effects of hyperventilation.     
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