density
/ˈdɛn.sə.ti/noun
density is spelled D-E-N-S-I-T-Y: 7 letters and 3 syllables. It appears 21 times per million words in written English, the 4,076th most frequent word form (wordfreq, 2021 data). As a noun, density means “A measure of the mass of matter contained by a unit volume” (English Wiktionary, September 2026). The plural of density is densities.
How many letters and syllables are in density?
| Letters | 7: D-E-N-S-I-T-Y |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 21 times per million words; the 4,076th most frequent word form |
| Wrong spellings searched | none measured in search |
| Same letters |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is density?
Density appears 21 times per million words in written English, the 4,076th 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 density?
- UK /ˈdɛn.sɪ.ti/
- UK /ˈdɛn.sə.ti/
- US /ˈdɛn.sə.ti/
Density has 3 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: LL-Q1860_(eng)-Vealhurl-density.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with density?
No other word on PlainSpell ends in the same sounds as density (/ɛnsəti/).
Spelled with the same letters in another order: destiny.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of density
- densities plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does density mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A measure of the mass of matter contained by a unit volume.
- 2
The ratio of one quantity, representing something of interest, to another quantity representing space, area, or extent in which the thing of interest is distributed.
The number of particles per unit volume of a specified volume can be considered to be the particle density for the specified volume.
- 3
The probability that an outcome will fall into a given range, per unit of that range; the relative likelihood of possible values of a continuous random variable.
- 4
Stupidity.
There's only so much density that pedagogy can penetrate.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Density in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | masse volumique , densité |
| German | Dichte, Massendichte |
| Portuguese | densidade |
| Spanish | densidad |
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 density come from?
Borrowed from Middle French densité or Latin densitas. Morphologically dense + -ity.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).