melatonina

[melat̪oˈnina]

/[melat̪oˈnina]/ noun

The verdict

“melatonina” is uncommon Spanish (frequency #68,739 among 3,868 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#68,739
frequency rank, Spanish
3,868
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Hormona relacionada con la serotonina que es secretada por la glándula pineal y estimula el cambio de color en la piel de los reptiles, y que también está involucrada en los ciclos de sueño en los ...

Corpus desk

Index ES-melatonina · melatonina · Spanish

melatonina · rank #68,739 · 0 variants · 0 confusables

  • FREQ-RARE #68,739
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,868
  • PHOTO-FINISH mejorías

Nearest frequency peer: mejorías (-1 rank slots)

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.

Rangos de cola larga cerca de “melatonina”

Banda escasa: las barras invierten el rango para que lo raro se lea más corto

corpus weight

What this shows Vista de cola larga: dónde “melatonina” se sitúa frente a rangos españoles igualmente raros.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for melatonina
PropertyValue
Headwordmelatonina
LanguageSpanish
Part of speechNoun
IPA[melat̪oˈnina]
Letters10
Frequency rank#68,739
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Cola larga: rango de “melatonina” en español

De izquierda a derecha: las pocas palabras que cargan el habla diaria, luego la cola larga casi invisible.melatoninacae en esta cola de rareza:

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

La escala es logarítmica (cada marca ≈ 10× más rara). Vecinos raros de la misma franja: “mejorías” (#68,738), “mece” (#68,737), “menosprecian” (#68,741). Entre 3,868 lemas con “M”, “melatonina” va en #68,739. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

melatonina is uncommon Spanish at frequency #68,739 among 3,868 “M” headwords, classed as anoun, transcribed [melat̪oˈnina]. Rarity is why readers land here mid-draft. Gloss: "Hormona relacionada con la serotonina que es secretada por la glándula pineal y estimula el cambio de color en la piel de los reptiles, y que también está involucrada en los ciclos de sueño en los ...".

melatonina doesn't appear in our generated misspelling index, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.

Our source data has no etymology on file for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct Spanish form is melatonina, spelled M-E-L-A-T-O-N-I-N-A.

Definition

  1. 1
    Hormona relacionada con la serotonina que es secretada por la glándula pineal y estimula el cambio de color en la piel de los reptiles, y que también está involucrada en los ciclos de sueño en los mamíferos.

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 "melatonina"?
"melatonina" is spelled M-E-L-A-T-O-N-I-N-A. The IPA pronunciation is [melat̪oˈnina].
What does "melatonina" mean?
As a noun, "melatonina" means: Hormona relacionada con la serotonina que es secretada por la glándula pineal y estimula el cambio de color en la piel de los reptiles, y que también está involucrada en los ciclos de sueño en los ...
How do you pronounce "melatonina"?
The IPA (International Phonetic Alphabet) transcription for "melatonina" is [melat̪oˈnina]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "melatonina" come from?
"melatonina" 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.

Similar Spanish words by spelling shape

Same letter count and similar misspelling depth for "melatonina", not the corpus desk frequency band.

Same letter count

Frequency-ranked Spanish headwords with 10 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list