ostra

/ˈos.tɾɐ/

//ˈos.tɾɐ// noun

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

The verdict

“ostra” is a moderately-common Portuguese word, ranked #37,449 in Portuguese word frequency and used as a noun.

#37,449
frequency rank, Portuguese
5
letters
7
tracked misspellings
7
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - 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 produç...

Visual similarity to commonly confused words

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

ostra vs ota
60% similar
ostra vs outro
60% similar
ostra vs ora
60% similar

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

Key facts for ostra
PropertyValue
Headwordostra
LanguagePortuguese
Part of speechNoun
IPA/ˈos.tɾɐ/
Letters5
Frequency rank#37,449
Misspellings tracked7
Confusable pairs7
SourceWiktionary (kaikki.org)

Where “ostra” sits in Portuguese frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). ostra lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The Portuguese entry for ostra is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈos.tɾɐ/. Corpus data places it at rank #37,449 in overall Portuguese word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 7 likely wrong-spelling variants for ostra, with forms such as "osrta", "osstra", and "ostar". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 7 confusable-pair relationships, "ota", "outro", "ora", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Wiktionary doesn't record an etymology for this headword, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct Portuguese form is ostra, spelled O-S-T-R-A.

Definition

  1. 1
    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
  2. 2
    pessoa inoportuna, que fica colada em outra; pessoa grudenta
  3. 3
    em locais de espetáculos, o nome da cadeira ou poltrona fixa contra a parede
  4. 4
    por analogia, catarro espesso

Synonyms

carrapato

This word in other languages

oyster(English)ostra(Español)huître(Français)Auster(Deutsch)

Common misspellings

Also misspelled as: osrta,osstra,ostar,ostrra,osttra,otsra,sotra

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of ostra - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

osrta2osstra1ostar2ostrra1osttra1otsra2sotra2
Edit distance from "ostra"

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

Frequently Asked Questions

How do you spell "ostra"?
"ostra" is spelled O-S-T-R-A. The IPA pronunciation is /ˈos.tɾɐ/.
What does "ostra" mean?
As a noun, "ostra" means: 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 produç...
What words are commonly confused with "ostra"?
"ostra" is commonly confused with "ota", "outro", "ora". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ostra"?
The IPA (International Phonetic Alphabet) transcription for "ostra" is /ˈos.tɾɐ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "ostra" come from?
"ostra" is a Portuguese word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

Using “ostra”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct Portuguese spelling is O-S-T-R-A - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈos.tɾɐ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “ota” - see the side-by-side comparison. ostra vs ota
  • Browse more Portuguese words and confusable pairs in the same reference. Portuguese words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list