[dens] 
| 1. | having the component parts closely compacted together; crowded or compact: a dense forest; dense population. |
| 2. | stupid; slow-witted; dull. |
| 3. | intense; extreme: dense ignorance. |
| 4. | relatively opaque; transmitting little light, as a photographic negative, optical glass, or color. |
| 5. | difficult to understand or follow because of being closely packed with ideas or complexities of style: a dense philosophical essay. |
| 6. | Mathematics. of or pertaining to a subset of a topological space in which every neighborhood of every point in the space contains at least one point of the subset. |
| su·per·dense (sōō'pər-děns') adj. Of or relating to an extreme condition in which matter is forced into nonclassical states, as when electrons are forced into protons, leaving only neutrons, or the matter is compressed beyond this point into a singularity. |