ostra

[ˈost̪ɾa]

/[ˈost̪ɾa]/ noun

The verdict

“ostra” is an uncommon Spanish word, ranked #53,741 in Spanish word frequency and used as a noun.

#53,741
frequency rank, Spanish
5
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - (familia Ostreidae) Cualquiera de una veintena de especies de moluscos bivalvos marinos, hermafroditas, de valvas irregulares y muy calcificadas, muy apreciados en gastronomía

Key facts for ostra
PropertyValue
Headwordostra
LanguageSpanish
Part of speechNoun
IPA[ˈost̪ɾa]
Letters5
Frequency rank#53,741
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “ostra” sits in Spanish 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 Spanish entry for ostra is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as [ˈost̪ɾa]. Corpus data places it at rank #53,741 in overall Spanish word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

The misspelling generator found no plausible variants for ostra, typically a sign the spelling maps closely to how the word sounds. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.

No documented word history exists for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is ostra, spelled O-S-T-R-A.

Definition

  1. 1
    (familia Ostreidae) Cualquiera de una veintena de especies de moluscos bivalvos marinos, hermafroditas, de valvas irregulares y muy calcificadas, muy apreciados en gastronomía
  2. 2
    (familia Pteriidae) Cualquiera de una varias decenas de especies de moluscos bivalvos marinos, hermafroditas, de valvas irregulares y muy calcificadas, apreciados por producir perlas

This word in other languages

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 Spanish 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 [ˈost̪ɾa].
What does "ostra" mean?
As a noun, "ostra" means: (familia Ostreidae) Cualquiera de una veintena de especies de moluscos bivalvos marinos, hermafroditas, de valvas irregulares y muy calcificadas, muy apreciados en gastronomía
How do you pronounce "ostra"?
The IPA (International Phonetic Alphabet) transcription for "ostra" is [ˈost̪ɾa]. 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 Spanish word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 Spanish spelling is O-S-T-R-A - every other letter order is a misspelling in standard orthography.
  • Say it as [ˈost̪ɾa] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more Spanish words and confusable pairs in the same reference. Spanish 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