diameter
/daɪˈæmɪdɚ/noun
diameter is spelled D-I-A-M-E-T-E-R: 8 letters and 4 syllables. It appears 12 times per million words in written English, the 6,230th most frequent word form (wordfreq, 2021 data). As a noun, diameter means “Any straight line between two points on the circumference of a circle that passes through the center of the circle; a chord that passes through the…” (English Wiktionary, September 2026). The plural of diameter is diameters.
How many letters and syllables are in diameter?
| Letters | 8: D-I-A-M-E-T-E-R |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | 12 times per million words; the 6,230th 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 diameter?
Diameter appears 12 times per million words in written English, the 6,230th 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 diameter?
- UK /daɪˈæmɪtə(ɹ)/
- US /daɪˈæmɪdɚ/
- US /daɪˈæmədɚ/
Diameter has 4 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-diameter.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of diameter
- diameters plural
- ⌀
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does diameter mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any straight line between two points on the circumference of a circle that passes through the center of the circle; a chord that passes through the center of the circle.
- 2
The length of such a line.
- 3
The maximum distance between any two points in a metric space.
- 4
The maximum eccentricity over all vertices in a graph.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you abbreviate diameter?
Wiktionary records 2 abbreviations of diameter: diam, diam..
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Diameter in Spanish, French, German and Portuguese
In the sense line:
| Language | Words |
|---|---|
| French | diamètre |
| German | Durchmesser, Diameter |
| Portuguese | diâmetro |
| Spanish | diámetro |
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.