denser; densest
1
a
: marked by compactness or crowding together of parts
dense vegetation
dense traffic
b
chemistry : having a high mass (see mass entry 2 sense 1c) per unit volume (see volume entry 1 sense 2)
Carbon dioxide is a dense gas.
The cake was overly sweet and dense.
2
a
: slow to understand : stupid, thickheaded
was too dense to get the joke
b
: extreme
dense ignorance
3
mathematics : having between any two elements at least one element
The set of rational numbers is dense.
4
: demanding concentration to follow or comprehend
dense prose
5
: having high or relatively high opacity (see opacity sense 2)
a dense fog
a dense photographic negative
densely adverb
denseness noun
Choose the Right Synonym for dense

stupid, dull, dense, crass, dumb mean lacking in power to absorb ideas or impressions.

stupid implies a slow-witted or dazed state of mind that may be either congenital or temporary.

stupid students just keeping the seats warm
stupid with drink

dull suggests a slow or sluggish mind such as results from disease, depression, or shock.

monotonous work that leaves the mind dull

dense implies a thickheaded imperviousness to ideas.

too dense to take a hint

crass suggests a grossness of mind precluding discrimination or delicacy.

a crass, materialistic people

dumb applies to an exasperating obtuseness or lack of comprehension.

too dumb to figure out what's going on

Examples of dense in a Sentence

They cut a path through the dense jungle. a dense tangle of wires a dense cluster of stars That part of the city has a dense population of immigrants. A dense mass of spectators filled the courtroom. In the movie, she plays his kind but somewhat dense aunt.
Recent Examples on the Web Expect a chewy, dense, and taffy-like texture, Johnson says. Jenny McCoy, Glamour, 15 Mar. 2024 Parkour, which is performed on obstacle courses or even in dense urban areas, requires a combination of athleticism and rapid decision making. Popular Science, 14 Mar. 2024 See all Example Sentences for dense 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'dense.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin densus; akin to Greek dasys thick with hair or leaves

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of dense was in the 15th century

Dictionary Entries Near dense

Cite this Entry

“Dense.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dense. Accessed 29 Mar. 2024.

Kids Definition

dense

adjective
denser; densest
1
a
: marked by closeness or crowding together of parts
a dense forest
b
: having a high mass per unit volume
lead is a very dense metal
2
: slow to understand : stupid sense 1a
3
: thick entry 1 sense 4
dense fog
4
: having between any two mathematical elements at least one element
the set of rational numbers is dense
densely adverb
denseness noun

More from Merriam-Webster on dense

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