Which to use
“radon” and “rayons” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #44,667
- “radon” frequency rank
- #5,492
- “rayons” frequency rank
- 50159
- confusion score
Side-by-Side Comparison
| Feature | radon | rayons |
|---|---|---|
| Definition | Élément chimique de numéro atomique 86 et de symbole Rn qui fait partie de la série chimique des gaz rares. | Pluriel de rayon. |
Where the eye mixes radon and rayons
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between radon and rayons
A purely visual mix-up. radon (\ʁa.dɔ̃\) and rayons (\ʁɛ.jɔ̃\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 50159, derived from the frequency rank of both members and their visual similarity.
radon is recorded at frequency rank #44,667, classified as anoun, pronounced \ʁa.dɔ̃\. rayons is at rank #5,492, tagged as anoun, pronounced \ʁɛ.jɔ̃\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 50159, this pair ranks #164,823 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of radon vs rayons
Shared letters: anor. Private to "radon": d. Private to "rayons": sy.
"radon" · 5 letters · shape CVCVC · "rayons" · 6 letters · shape CVVVCC
Known mistypes of this pair
Frequently Asked Questions
Do "radon" and "rayons" mean the same thing in a sentence?
In ordinary French text, does "radon" or "rayons" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "radon" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rayons" - compare definitions side by side with the headword page. Word entry
- This pair ranks #164,823 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "radon" and "rayons" also get mixed up with nearby pairs, the highest-scored neighbour is "radon vs ramen". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #164,823 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.