mononucleosis

[mononukleˈosis]

/[mononukleˈosis]/ noun

The verdict

“mononucleosis” is uncommon Spanish (frequency #84,147 among 36,142 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#84,147
frequency rank, Spanish
36,142
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Enfermedad infecciosa causada por el virus de Epstein Barr (VEB), que pertenece a la misma familia del virus del herpes. Con mucha menos frecuencia puede ser causada por el citomegalovirus, y en un...

Key facts for mononucleosis
PropertyValue
Headwordmononucleosis
LanguageSpanish
Part of speechNoun
IPA[mononukleˈosis]
Letters13
Frequency rank#84,147
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “mononucleosis” 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). mononucleosis lands here:

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

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

Rare enough to double-check

mononucleosis is uncommon Spanish at frequency #84,147 among 36,142 “M” headwords, classed as anoun, transcribed [mononukleˈosis]. Rarity is why readers land here mid-draft. Gloss: "Enfermedad infecciosa causada por el virus de Epstein Barr (VEB), que pertenece a la misma familia del virus del herpes. Con mucha menos frecuencia puede ser causada por el citomegalovirus, y en un...".

Zero misspellings are on record for mononucleosis in our index, a straightforward case of a spelling with little room for common typos. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

No borrowing history is documented for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct Spanish form is mononucleosis, spelled M-O-N-O-N-U-C-L-E-O-S-I-S.

Definition

  1. 1
    Enfermedad infecciosa causada por el virus de Epstein Barr (VEB), que pertenece a la misma familia del virus del herpes. Con mucha menos frecuencia puede ser causada por el citomegalovirus, y en un 1 % de los casos por Toxoplasma gondii.

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 "mononucleosis"?
"mononucleosis" is spelled M-O-N-O-N-U-C-L-E-O-S-I-S. The IPA pronunciation is [mononukleˈosis].
What does "mononucleosis" mean?
As a noun, "mononucleosis" means: Enfermedad infecciosa causada por el virus de Epstein Barr (VEB), que pertenece a la misma familia del virus del herpes. Con mucha menos frecuencia puede ser causada por el citomegalovirus, y en un...
How do you pronounce "mononucleosis"?
The IPA (International Phonetic Alphabet) transcription for "mononucleosis" is [mononukleˈosis]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "mononucleosis" come from?
"mononucleosis" 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 “mononucleosis”

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

  • The one correct Spanish spelling is M-O-N-O-N-U-C-L-E-O-S-I-S - every other letter order is a misspelling in standard orthography.
  • Say it as [mononukleˈosis] (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

Other uncommon Spanish words near this rank

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