exa-

[ˈeksa]

/[ˈeksa]/ prefix

The verdict

“exa-” is uncommon Spanish (outside the top frequency list), classed as a prefix. The kind of spelling people second-guess.

Unranked
below top-frequency Spanish
4
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Factor algebraico que indica un trillón (10¹⁸) de veces, de símbolo E. Precede a unidades de medición, tal como en exabyte, que –por estar expresado en prefijo binario– el exponente es 260: 10²⁶⁰.

Corpus desk

Index ES-exa · exa- · Spanish

exa- · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "E" thin
  • PHOTO-UNK Peer pending

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for exa-
PropertyValue
Headwordexa-
LanguageSpanish
Part of speechPrefix
IPA[ˈeksa]
Letters4
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Cola larga: rango de “exa-” en español

exa-está más allá de las 100.000 formas más frecuentes del español, en la cola de léxico especializado o poco usado donde la duda ortográfica aprieta.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

exa- is uncommon Spanish outside the top frequency list, classed as aprefix, transcribed [ˈeksa]. Rarity is why readers land here mid-draft. Gloss: "Factor algebraico que indica un trillón (10¹⁸) de veces, de símbolo E. Precede a unidades de medición, tal como en exabyte, que –por estar expresado en prefijo binario– el exponente es 260: 10²⁶⁰.".

No misspelling variants are generated for exa- in our index, since its letter pattern doesn't lend itself to common typo substitutions. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

No documented word history exists for this headword, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct Spanish form is exa-, spelled E-X-A--.

Definition

  1. 1
    Factor algebraico que indica un trillón (10¹⁸) de veces, de símbolo E. Precede a unidades de medición, tal como en exabyte, que –por estar expresado en prefijo binario– el exponente es 260: 10²⁶⁰.

Recorded use

Wiktionary example

These source excerpts show how exa- appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Prefijos. El prefijo mili- está adaptado al castellano, con la simplificación de la ele doble, y no parece que haya razón para no hacer lo mismo con los prefijos más recientes. En particular, yotta, zetta, atto y femto podrían pasar a yota, zeta, ato y fento. Por otra parte, en la terminología científica no es raro encontrar grupos de letras ajenos el esp…

Synonyms

Antonyms

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "exa-"?
"exa-" is spelled E-X-A--. The IPA pronunciation is [ˈeksa].
What does "exa-" mean?
As a prefix, "exa-" means: Factor algebraico que indica un trillón (10¹⁸) de veces, de símbolo E. Precede a unidades de medición, tal como en exabyte, que –por estar expresado en prefijo binario– el exponente es 260: 10²⁶⁰.
How do you pronounce "exa-"?
The IPA (International Phonetic Alphabet) transcription for "exa-" is [ˈeksa]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "exa-" come from?
"exa-" is a Spanish 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.

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

Source: FrequencyWords open word-frequency list