hyperventilation

American  

[hahy-per-ven-tl-ey-shuhn] / ˌhaɪ pərˌvɛn tlˈeɪ ʃən /

noun

1. excessively rapid and deep breathing.

2. a condition characterized by abnormally prolonged and rapid breathing, resulting in decreased carbon dioxide levels and increased oxygen levels that produce faintness, tingling of the fingers and toes, and, if continued, alkalosis and loss of consciousness.

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hyperventilation British  

/ ˌhaɪpəˌvɛntɪˈleɪʃən /

noun

1. an increase in the depth, duration, and rate of breathing, sometimes resulting in cramp and dizziness

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Etymology

Origin of hyperventilation

First recorded in 1925–30; hyper- + ventilation

Compare meaning

How does hyperventilation compare to similar and commonly confused words? Explore the most common comparisons:

• tachypnea vs. hyperventilation
• hyperpnea vs. hyperventilation

Example Sentences

They also analyzed breathing rate and patterns to detect signs of hyperventilation and dysfunctional breathing.

From Science Daily • Nov. 10, 2025

In some cases, they have attributed reported health-effects from fume exposure to factors including hyperventilation, jet lag, psychological stress, mass hysteria and malingering.

From The Wall Street Journal • Sep. 14, 2025

However, hyperventilation in the breathwork setting is a bit different from what might occur if one is having a panic attack, Havenith said.

From Salon • Apr. 23, 2025

It can take up to 24 hours for victims to start showing signs of illness which include: nausea, vomiting and abdominal pain which can escalate into hyperventilation and breathing problems.

From BBC • Nov. 21, 2024

I felt my breathing gradually creeping toward hyperventilation as I approached the door.

From "Twilight" by Stephenie Meyer