hydrogenation
"hydrogenation" is a 13-letter English headword indexed on PlainSpell.
The verdict
“hydrogenation” is uncommon English (frequency #63,691 among 23,837 “H” headwords), classed as a noun. The kind of spelling people second-guess.
- #63,691
- frequency rank, English
- 23,837
- “H” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.
| Property | Value |
|---|---|
| Headword | hydrogenation |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Frequency rank | #63,691 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “hydrogenation” sits in English frequency
Rare enough to double-check
hydrogenation is uncommon English at frequency #63,691 among 23,837 “H” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.".
The misspelling generator found no plausible variants for hydrogenation, typically a sign the spelling maps closely to how the word sounds. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From hydrogen + -ation. The correct English form is hydrogenation, spelled H-Y-D-R-O-G-E-N-A-T-I-O-N.
Definition
- 1The chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.
Etymology
From hydrogen + -ation.
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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “hydrogenation”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is H-Y-D-R-O-G-E-N-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English 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.