Which to use
“césio” and “cio” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #41,427
- “césio” frequency rank
- #22,564
- “cio” frequency rank
- 63991
- confusion score
Side-by-Side Comparison
| Feature | césio | cio |
|---|---|---|
| Definition | elemento químico de símbolo Cs, possui o número atômico 55 e massa atômica relativa 132,905 u; é um metal alcalino, de coloração ouro prateado; é encontrado em minerais de potássio, tais como micas, berílio, feldspatos e a polucita (alumínio-silicato de césio); o césio metálico é utilizado na fabricação de células fotoelétricas e detectores de infravermelho | período de maior apetite sexual e fertilidade de certos animais |
Where the eye mixes césio and cio
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. césio runs 5 letters (CVCVV) against cio's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between césio and cio
A purely visual mix-up. césio (/ˈsɛzju/) and cio (/ˈsi.u/) 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 2 letter(s) in length. Our composite confusion score for this pair is 63991, derived from the frequency rank of both members and their visual similarity.
césio is recorded at frequency rank #41,427, classified as anoun, pronounced /ˈsɛzju/. cio is at rank #22,564, tagged as anoun, pronounced /ˈsi.u/.
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 63991, this pair ranks #5,961 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of césio vs cio
Shared letters: cio. Private to "césio": sé. Private to "cio": -.
"césio" · 5 letters · shape CVCVV · "cio" · 3 letters · shape CVV
Frequently Asked Questions
Is swapping "césio" for "cio" ever safe?
Which is more common, "césio" or "cio"?
After this comparison
Eye-level mix-up between "césio" and "cio" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "césio" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cio" - compare definitions side by side with the headword page. Word entry
- This pair ranks #5,961 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "césio" and "cio" also get mixed up with nearby pairs, the highest-scored neighbour is "césio vs cisto". Nearby pair
Confusion rank #5,961 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.