demethylation

noun

"demethylation" is a 13-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
13
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The removal of one or more methyl groups from a molecule.

Corpus desk

Index EN-demethylation · demethylation · English

demethylation · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "D" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

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 demethylation
PropertyValue
Headworddemethylation
LanguageEnglish
Part of speechNoun
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “demethylation” sits in English frequency

demethylationsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

demethylation is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The removal of one or more methyl groups from a molecule.".

Our edit-distance generator produced no likely misspellings for demethylation, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From de- + methylation. The correct English form is demethylation, spelled D-E-M-E-T-H-Y-L-A-T-I-O-N.

Definition

  1. 1
    The removal of one or more methyl groups from a molecule.

Recorded use

Wiktionary example

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

  1. That imprinted genes escape demethylation is, we now know, all that stood between science and the cloning of mammals for many years.

Etymology

From de- + methylation.

Antonyms

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 "demethylation"?
"demethylation" is spelled D-E-M-E-T-H-Y-L-A-T-I-O-N.
What does "demethylation" mean?
As a noun, "demethylation" means: The removal of one or more methyl groups from a molecule.
What is the origin of the word "demethylation"?
From de- + methylation. See the full etymology section above for more details.
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.

What to do next

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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