virion

/ˈvaɪɹiɑn/

//ˈvaɪɹiɑn// noun

"virion" is a 6-letter English headword indexed on PlainSpell.

The verdict

“virion” is uncommon English (frequency #77,325 among 969 “V” headwords), classed as a noun. The kind of spelling people second-guess.

#77,325
frequency rank, English
969
“V” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A single individual particle of a virus (the viral equivalent of a cell).

Corpus desk

Index EN-virion · virion · English

virion · rank #77,325 · 0 variants · 0 confusables

  • FREQ-RARE #77,325
  • LEN-LONG 6 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 969
  • PHOTO-FINISH vetch

Nearest frequency peer: vetch (-3 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.

Long-tail ranks near “virion”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “virion” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for virion
PropertyValue
Headwordvirion
LanguageEnglish
Part of speechNoun
IPA/ˈvaɪɹiɑn/
Letters6
Frequency rank#77,325
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “virion” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).virionfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “vetch” (#77,322), “verisimilitude” (#77,321), “Verano” (#77,320). Among 969 “V” headwords, “virion” is #77,325. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

virion is uncommon English at frequency #77,325 among 969 “V” headwords, classed as anoun, transcribed /ˈvaɪɹiɑn/. Rarity is why readers land here mid-draft. Gloss: "A single individual particle of a virus (the viral equivalent of a cell).".

No misspelling variants are generated for virion in our index, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From French virion. By surface analysis, virus + -on. The correct English form is virion, spelled V-I-R-I-O-N.

Definition

  1. 1
    A single individual particle of a virus (the viral equivalent of a cell).

Etymology

From French virion. By surface analysis, virus + -on.

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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "virion"?
"virion" is spelled V-I-R-I-O-N. The IPA pronunciation is /ˈvaɪɹiɑn/.
What does "virion" mean?
As a noun, "virion" means: A single individual particle of a virus (the viral equivalent of a cell).
How do you pronounce "virion"?
The IPA (International Phonetic Alphabet) transcription for "virion" is /ˈvaɪɹiɑn/. 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 "virion"?
From French virion. By surface analysis, virus + -on. 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 "virion", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list