césiovscisãoWhich spelling fits?

Which to use

“césio” and “cisão” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#41,427
“césio” frequency rank
#36,806
“cisão” frequency rank
78233
confusion score

Side-by-Side Comparison

Feature césio cisão
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 ato de cindir

Where the eye mixes césio and cisão

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. césio and cisão follow the identical consonant-vowel pattern (CVCVV). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
césio
5 ch
cisão

Look-alike desk: césio vs cisão

A purely visual mix-up. césio (/ˈsɛzju/) and cisão (/si.ˈzɐ̃w̃/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 78233, 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/. cisão is at rank #36,806, tagged as anoun, pronounced /si.ˈzɐ̃w̃/.

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 78233, this pair ranks #1,712 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of césio vs cisão

Shared letters: cios. Private to "césio": é. Private to "cisão": ã.

"césio" · 5 letters · shape CVCVV  ·  "cisão" · 5 letters · shape CVCVV

Frequently Asked Questions

Do "césio" and "cisão" mean the same thing in a sentence?
No. They are said differently (/ˈsɛzju/ versus /si.ˈzɐ̃w̃/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "césio" vs "cisão" - which ranks higher?
"cisão" is the more common of the two: it sits at frequency rank #36,806 in our Portuguese list, against #41,427 for "césio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "césio" and "cisão" 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 "cisão" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,712 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "césio" and "cisão" also get mixed up with nearby pairs, the highest-scored neighbour is "ciao vs cisão". Nearby pair

Confusion rank #1,712 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list