norovirus

/ˈnɒɹə(ʊ)vaɪɹəs/

//ˈnɒɹə(ʊ)vaɪɹəs// noun

By · According to Wiktionary data (CC BY-SA) ·

"norovirus" is a 9-letter English headword indexed on PlainSpell.

The verdict

“norovirus” is uncommon English (frequency #72,600 among 1,534 “N” headwords), classed as a noun. The kind of spelling people second-guess.

#72,600
frequency rank, English
1,534
“N” headwords

According to Wiktionary data (CC BY-SA, analyzed September 2, 2026) - Norovirus, the genus of Norwalk virus, which causes gastric distress in humans.

Corpus desk

Index EN-norovirus · norovirus · English

norovirus · rank #72,600 · 0 variants · 0 confusables

  • FREQ-RARE #72,600
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH Norbury

Nearest frequency peer: Norbury (-1 rank slots)

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.

Frequency neighbourhood for “norovirus”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “norovirus” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 2, 2026
Key facts for norovirus
PropertyValue
Headwordnorovirus
LanguageEnglish
Part of speechNoun
IPA/ˈnɒɹə(ʊ)vaɪɹəs/
Letters9
Frequency rank#72,600
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “norovirus” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). norovirus lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

norovirus is uncommon English at frequency #72,600 among 1,534 “N” headwords, classed as anoun, transcribed /ˈnɒɹə(ʊ)vaɪɹəs/. Rarity is why readers land here mid-draft. Gloss: "Norovirus, the genus of Norwalk virus, which causes gastric distress in humans.".

Zero misspellings are on record for norovirus in our index, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From Nor(walk) + -o- + virus. The correct English form is norovirus, spelled N-O-R-O-V-I-R-U-S.

Definition

  1. 1
    Norovirus, the genus of Norwalk virus, which causes gastric distress in humans.

Recorded use

Wiktionary examples

These source excerpts show how norovirus appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The norovirus causes nausea, vomiting, diarrhea and stomach cramping.
  2. Norovirus outbreaks are rising across the United States; it is impressively contagious: The virus spreads rapidly, symptoms appear suddenly, and the virus can survive on surfaces for days to weeks.

Etymology

From Nor(walk) + -o- + virus.

This word in other languages

Norovirus(Deutsch)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "norovirus"?
"norovirus" is spelled N-O-R-O-V-I-R-U-S. The IPA pronunciation is /ˈnɒɹə(ʊ)vaɪɹəs/.
What does "norovirus" mean?
As a noun, "norovirus" means: Norovirus, the genus of Norwalk virus, which causes gastric distress in humans.
How do you pronounce "norovirus"?
The IPA (International Phonetic Alphabet) transcription for "norovirus" is /ˈnɒɹə(ʊ)vaɪɹəs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "norovirus"?
From Nor(walk) + -o- + virus. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "norovirus", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

obstinacy#72,604occultism#72,605Orpington#72,618overspend#72,627
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list