melatonina

[melat̪oˈnina]

/[melat̪oˈnina]/ noun

The verdict

“melatonina” is uncommon Spanish (frequency #68,739 among 36,142 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#68,739
frequency rank, Spanish
36,142
“M” headwords

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

Key facts for melatonina
PropertyValue
Headwordmelatonina
LanguageSpanish
Part of speechNoun
IPA[melat̪oˈnina]
Letters10
Frequency rank#68,739
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “melatonina” 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). melatonina 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

melatonina is uncommon Spanish at frequency #68,739 among 36,142 “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.

Using “melatonina”

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

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