radon

\ʁa.dɔ̃\

/\ʁa.dɔ̃\/ noun

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

The verdict

“radon” has 6 generated spelling variants in the French index at frequency #44,667. The variants make it a useful spelling check.

#44,667
frequency rank, French
5,742
“R” headwords
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Élément chimique de numéro atomique 86 et de symbole Rn qui fait partie de la série chimique des gaz rares.

Corpus desk

Index FR-radon · radon · French

radon · rank #44,667 · 6 variants · 20 confusables

  • FREQ-MID #44,667
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-MID 6 variants
  • BOOK-DENSE 5,742
  • PHOTO-FINISH racontaient

Nearest frequency peer: racontaient (-1 rank slots)

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.

Pairs de rang près de l'aimant d'erreurs « radon »

Même bande de rareté: utile si une faute tombe sur un lemme voisin

corpus weight

What this shows « radon » siège parmi ces pairs FrequencyWords; la profondeur des fautes est suivie à part dans le graphique d'édition.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

radon vs rain
60% similar
radon vs rayon
80% similar
radon vs Ramos
40% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for radon
PropertyValue
Headwordradon
LanguageFrench
Part of speechNoun
IPA\ʁa.dɔ̃\
Letters5
Frequency rank#44,667
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Fréquence de l'aimant d'erreurs « radon »

Cette échelle va du noyau du français courant (gauche) jusqu'à la traîne des formes rares (droite).radonse place ici:

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

L'axe est logarithmique: chaque tic marque environ dix fois moins de fréquence. Dans la même bande de rareté figurent « racontaient » (#44,666), « rafraîchissante » (#44,668), « racer » (#44,665). Parmi 5,742 lemmes en « R », « radon » est au #44,667. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 6 spelling variants around radon (IPA \ʁa.dɔ̃\), anoun. Corpus frequency is #44,667 among 5,742 “R” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 6 likely wrong-spelling variants for radon, with forms such as "ardon", "raddon", and "radonn". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "rain", "rayon", "Ramos", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No borrowing history is documented for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct French form is radon, spelled R-A-D-O-N.

Definition

  1. 1
    Élément chimique de numéro atomique 86 et de symbole Rn qui fait partie de la série chimique des gaz rares.
  2. 2
    Gaz monoatomique et radioactif de cet élément (Rn).
  3. 3
    Atome (ou, par ellipse, noyau) de radon.
  4. 4
    Isotopes ou alliages de radon, dans leur ensemble.

Recorded use

Wiktionary examples

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

  1. L’uranium se transforme en divers autres éléments dont le radon que l’on trouve dans de nombreuses mines souterraines, pas seulement d’uranium – parce que bien sûr les minerais ne sont pas séparés dans la terre, ils sont tous ensemble, on peut retrouver par exemple en Afrique du Sud l’uranium et l’or dans le même filon, et il faut les séparer pour en tire…
  2. On estime que le phosphogypse contenu dans les plâtres et ciments délivre, par inhalation du radon qu’il relargue, une dose efficace annuelle de l'ordre de 0,6 mSv, liée à la présence d'environ 900 Bq/kg de ²²⁶Ra dans le phosphogypse.

Synonyms

actinonémanation du radiumémanonnitonradéonthoron

This word in other languages

radon(English)radón(Español)Radon(Deutsch)rádon(Português)

Common misspellings

Also misspelled as:

  • ardon
  • raddon
  • radonn
  • raodn
  • rdaon
  • rradon

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of radon - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ardon2raddon1radonn1raodn2rdaon2rradon1
Edit distance from "radon"

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 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "radon"?
"radon" is spelled R-A-D-O-N. The IPA pronunciation is \ʁa.dɔ̃\.
What does "radon" mean?
As a noun, "radon" means: Élément chimique de numéro atomique 86 et de symbole Rn qui fait partie de la série chimique des gaz rares.
What words are commonly confused with "radon"?
"radon" is commonly confused with "rain", "rayon", "Ramos". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "radon"?
The IPA (International Phonetic Alphabet) transcription for "radon" is \ʁa.dɔ̃\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "radon" come from?
"radon" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 French words by spelling shape

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

Same letter count

Frequency-ranked French headwords with 5 letters (nearest by frequency rank).

racer#44,665rimer#44,694pliés#44,634Rumba#44,706

Similar misspelling depth

Headwords with a similar count of attested misspellings (6 here; floor ≥5).

Sfax6 variantssold6 variantstypo6 variantsJPEG6 variants

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

Source: FrequencyWords open word-frequency list