treatise
/ˈtɹiːtɪs/noun
treatise is spelled T-R-E-A-T-I-S-E: 8 letters and 2 syllables. It appears 2.4 times per million words in written English, the 17,587th most frequent word form (wordfreq, 2021 data). As a noun, treatise means “A formal, usually lengthy, systematic discourse on some subject” (English Wiktionary, September 2026). The plural of treatise is treatises.
How many letters and syllables are in treatise?
| Letters | 8: T-R-E-A-T-I-S-E |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 2.4 times per million words; the 17,587th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is treatise?
Treatise appears 2.4 times per million words in written English, the 17,587th 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 treatise?
- /ˈtɹiːtɪs/
- /ˈtɹiːtɪz/
Treatise has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-treatise.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of treatise
- treatises plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does treatise mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A formal, usually lengthy, systematic discourse on some subject.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Treatise in Spanish, French, German and Portuguese
In the sense systematic discourse on some subject:
| Language | Words |
|---|---|
| French | traité |
| German | Abhandlung, Traktat |
| Portuguese | tratado |
| Spanish | tratado |
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 treatise come from?
From Middle English tretys, from Anglo-Norman tretiz and Old French traitis (“treatise, account”), from traitier (“to deal with, treat”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).