enthalpy
/ˈɛn.θəl.piː/noun
enthalpy is spelled E-N-T-H-A-L-P-Y: 8 letters. It appears about once in every 4 million words in written English, the 60,838th most frequent word form (wordfreq, 2021 data). As a noun, enthalpy means “A measure of the heat content of a chemical or physical system” (English Wiktionary, September 2026). The plural of enthalpy is enthalpies.
How many letters and syllables are in enthalpy?
| Letters | 8: E-N-T-H-A-L-P-Y |
|---|---|
| In writing | about once in every 4 million words; the 60,838th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is enthalpy?
Enthalpy appears about once in every 4 million words in written English, the 60,838th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce enthalpy?
- /ˈɛn.θəl.piː/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-enthalpy.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of enthalpy
- enthalpies plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does enthalpy mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A measure of the heat content of a chemical or physical system.
H=U+pV, where H is enthalpy, U is internal energy, p is pressure, and V is volume.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Enthalpy in Spanish, French, German and Portuguese
In the sense a measure of the heat content:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does enthalpy come from?
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".
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).