denser; densest
Definition of dense
1a
: 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.
2a
: 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
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Merriam-Webster unabridged
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Time Traveler for dense
The first known use of dense was in the 15th century
See more words from the same century