hypoventilation

noun

"hypoventilation" is a 15-letter English headword indexed on PlainSpell.

The verdict

“hypoventilation” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
15
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Respiratory depression, occurring when ventilation is inadequate to perform the necessary gas exchange, which may be caused by certain medical conditions, by holding one's breath, or by drug overdose.

Corpus desk

Index EN-hypoventilation · hypoventilation · English

hypoventilation · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 15 letters
  • VOW-7 7 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "H" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for hypoventilation
PropertyValue
Headwordhypoventilation
LanguageEnglish
Part of speechNoun
Letters15
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “hypoventilation” in English

hypoventilationranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

hypoventilation is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Respiratory depression, occurring when ventilation is inadequate to perform the necessary gas exchange, which may be caused by certain medical conditions, by holding one's breath, or by drug overdose.".

We couldn't generate a plausible misspelling set for hypoventilation, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From hypo- + ventilation. The correct English form is hypoventilation, spelled H-Y-P-O-V-E-N-T-I-L-A-T-I-O-N.

Definition

  1. 1
    Respiratory depression, occurring when ventilation is inadequate to perform the necessary gas exchange, which may be caused by certain medical conditions, by holding one's breath, or by drug overdose.

Etymology

From hypo- + ventilation.

Antonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "hypoventilation"?
"hypoventilation" is spelled H-Y-P-O-V-E-N-T-I-L-A-T-I-O-N.
What does "hypoventilation" mean?
As a noun, "hypoventilation" means: Respiratory depression, occurring when ventilation is inadequate to perform the necessary gas exchange, which may be caused by certain medical conditions, by holding one's breath, or by drug overdose.
What is the origin of the word "hypoventilation"?
From hypo- + ventilation. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list