/ Dictionary / Index D dense: Meaning and Definition of Find definitions for: dense Pronunciation: (dens), [key] — dens•er, dens•est. having the component parts closely compacted together; crowded or compact: a dense forest; dense population. stupid; slow-witted; dull. intense; extreme: dense ignorance. relatively opaque; transmitting little light, as a photographic negative, optical glass, or color. difficult to understand or follow because of being closely packed with ideas or complexities of style: a dense philosophical essay. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dense (Thesaurus) dens densify Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language