Which to use
“Ost” and “ostra” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,958
- “Ost” frequency rank
- #37,449
- “ostra” frequency rank
- 65407
- confusion score
Side-by-Side Comparison
| Feature | Ost | ostra |
|---|---|---|
| Definition | leste | nome comum a vários moluscos bivalves da família dos ostreídeos, alguns tendo importância econômica por serem comestíveis e de alto valor nutritivo, outras espécies que são cultivadas para a produção de pérolas, que vivem fixados a alguma base |
Where the eye mixes Ost and ostra
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between Ost and ostra
A purely visual mix-up. Ost (/ɔst/) and ostra (/ˈos.tɾɐ/) 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 extra letter(s) - “Ost” sits inside “ostra”. Our composite confusion score for this pair is 65407, derived from the frequency rank of both members and their visual similarity.
Ost is recorded at frequency rank #27,958, classified as anoun, pronounced /ɔst/. ostra is at rank #37,449, tagged as anoun, pronounced /ˈos.tɾɐ/.
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 65407, this pair ranks #5,390 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of Ost vs ostra
Shared letters: ost. Private to "Ost": -. Private to "ostra": ar.
"Ost" · 3 letters · shape VCC · "ostra" · 5 letters · shape VCCCV
Known mistypes of this pair
- ostra ← osrta · osstra · ostar · ostrra · osttra · otsra · sotra
Frequently Asked Questions
Do "Ost" and "ostra" mean the same thing in a sentence?
In ordinary Portuguese text, does "Ost" or "ostra" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Ost" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ostra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #5,390 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "Ost" and "ostra" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs Ost". 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 #5,390 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.