hy·​per·​ven·​ti·​la·​tion ˌhī-pər-ˌven-tə-ˈlā-shən How to pronounce hyperventilation (audio)
: excessive rate and depth of respiration leading to abnormal loss of carbon dioxide from the blood

Example Sentences

Recent Examples on the Web Another Federal Open Market Committee statement, another Jerome Powell press conference, another round of runic dot plots, another bout of hyperventilation as markets and the press attempt to make sense of new marching orders from the Federal Reserve. Joseph C. Sternberg, WSJ, 15 Dec. 2022 The reaction is marked by fever, chills, nausea, vomiting, headache, rapid heart rate, low blood pressure, hyperventilation, flushing, and pain. Beth Mole, Ars Technica, 13 Apr. 2023 But with college football coming back, regardless of its quality or being played in mostly empty stadiums, Americans can at least wrap themselves in the comfortable blanket of hyperventilation and self-loathing every weekend when their favorite teams lose. Dan Wolken, USA TODAY, 13 Sep. 2020 Shallow water blackout, however, occurs in people who practice pre-submersion hyperventilation. Dr. Michael Daignault, USA TODAY, 12 Jan. 2023 That’s basically hyperventilation. Alli Harvey, Anchorage Daily News, 9 Jan. 2022 This is a recipe for hyperventilation. Tom Vanderbilt, Outside Online, 2 July 2019 In cyclic hyperventilation, a person breathes in deeply and out quickly — the inhalations are much longer than the exhalations. Sandee Lamotte, CNN, 7 Mar. 2023 Researchers sorted 114 people into four groups and asked them to practice mindful meditation or one breathing exercise — box breathing, cyclic hyperventilation or cyclic sighing — for five minutes a day for 28 days. Sandee Lamotte, CNN, 7 Mar. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hyperventilation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1928, in the meaning defined above

Time Traveler
The first known use of hyperventilation was in 1928

Dictionary Entries Near hyperventilation

Cite this Entry

“Hyperventilation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperventilation. Accessed 30 May. 2023.

Kids Definition


hy·​per·​ven·​ti·​la·​tion ˌhī-pər-ˌvent-ᵊl-ˈā-shən How to pronounce hyperventilation (audio)
: breathing that is very fast and deep and leads to abnormal loss of carbon dioxide from the blood

Medical Definition


hy·​per·​ven·​ti·​la·​tion -ˌvent-ᵊl-ˈā-shən How to pronounce hyperventilation (audio)
: excessive ventilation
specifically : excessive rate and depth of respiration leading to abnormal loss of carbon dioxide from the blood

called also overventilation

More from Merriam-Webster on hyperventilation

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