enthalpy
/ˈɛn.θəl.piː/
"enthalpy" is a 8-letter English headword indexed on PlainSpell.
The verdict
“enthalpy” is uncommon English (frequency #60,792 among 2,246 “E” headwords), classed as a noun. The kind of spelling people second-guess.
- #60,792
- frequency rank, English
- 2,246
- “E” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A measure of the heat content of a chemical or physical system.
Corpus desk
Index EN-enthalpy · enthalpy · English
enthalpy · rank #60,792 · 0 variants · 0 confusables
- FREQ-RARE #60,792
- LEN-LONG 8 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,246
- PHOTO-FINISH enrage
Nearest frequency peer: enrage (-1 rank slots)
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.
Long-tail ranks near “enthalpy”
Sparse band: bars invert rank so rarer forms read shorter
- Eldar
Eldar
39,213 corpus weight
- elt
elt
39,212 corpus weight
- Englander
Englander
39,211 corpus weight
- enrage
enrage
39,210 corpus weight
- enthalpy
enthalpy
39,209 corpus weight
- Estee
Estee
39,207 corpus weight
What this shows Long-tail view: where “enthalpy” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | enthalpy |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈɛn.θəl.piː/ |
| Letters | 8 |
| Frequency rank | #60,792 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “enthalpy” in English
Rare enough to double-check
enthalpy is uncommon English at frequency #60,792 among 2,246 “E” headwords, classed as anoun, transcribed /ˈɛn.θəl.piː/. Rarity is why readers land here mid-draft. Gloss: "A measure of the heat content of a chemical or physical system.".
The misspelling generator found no plausible variants for enthalpy, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Ancient Greek ἐν- (en-, “in”) + θάλπω (thálpō, “to warm”). Coined by Dutch physicist Heike Kamerlingh Onnes, but first used in print by J. P. Dalton in 1909 in a paper titled "Researches on the Joule-Kelvin-effect, especially at low temperatures". The correct English form is enthalpy, spelled E-N-T-H-A-L-P-Y.
Definition
- 1A measure of the heat content of a chemical or physical system.
Recorded use
Wiktionary exampleThese source excerpts show how enthalpy appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
H=U+pV, where H is enthalpy, U is internal energy, p is pressure, and V is volume.
Etymology
From Ancient Greek ἐν- (en-, “in”) + θάλπω (thálpō, “to warm”). Coined by Dutch physicist Heike Kamerlingh Onnes, but first used in print by J. P. Dalton in 1909 in a paper titled "Researches on the Joule-Kelvin-effect, especially at low temperatures".
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "enthalpy", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 8 letters (nearest by frequency rank).