(n) an increased depth and rate of breathing greater than demanded by the body needs; can cause dizziness and tingling of the fingers and toes and chest pain if continued
n. 1. The act or process of hyperventilating; breathing rapidly and deeply. [ PJC ]
2. (Med.) A condition in which alveolar carbon dioxide concentration is markedly lower than normal, usually due to breathing rapidly and deeply. [ PJC ]