extremely rapid or deep breathing that may cause dizziness, fainting, etc. as a result of a rapid loss of carbon dioxide
Abnormally fast or deep respiration, which results in the loss of carbon dioxide from the blood, thereby causing a fall in blood pressure, tingling of the extremities, and sometimes fainting.
(countable and uncountable, plural hyperventilations)
- (medicine) the state of breathing faster or deeper than necessary