noun · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/ˈdɛn.sɪ.ti/
UK:/ˈdɛn.sə.ti/
US:/ˈdɛn.sə.ti/
US:[ˈdɛn.sə.ɾi]
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:D EH1 N S AH0 T IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
CMU ARPABET 2:D EH1 N S IH0 T IY0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The amount of a certain phenomenon (such as stuff, things, energy, or otherwise) in a given area (surface area) or volume (amount of space).
A measure of the mass of matter contained by a unit volume.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: denseness, mass density
Antonyms: none provided
2
noun
Meaning 2
The amount of a certain phenomenon (such as stuff, things, energy, or otherwise) in a given area (surface area) or volume (amount of space).
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.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Examples
The number of particles per unit volume of a specified volume can be considered to be the particle density for the specified volume.
Meaning relationships
Synonyms: denseness, number density
Antonyms: none provided
3
noun
Meaning 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.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: mathematics, sciences, statistics
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: probability density
Antonyms: none provided
4
noun
Meaning 4
Stupidity.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Examples
There's only so much density that pedagogy can penetrate.