(adj) permitting little if any light to pass through because of denseness of matter, Syn.heavy, impenetrable, Example: dense smoke; heavy fog; impenetrable gloom
(adj) slow to learn or understand; lacking intellectual acuity; ; ; - Thackeray, Syn.dull, slow, dumb, obtuse, dim, Example: so dense he never understands anything I say to him; never met anyone quite so dim; although dull at classical learning, at mathematics he was uncommonly quick; dumb officials make some really dumb decisions; he was either normally stupid or being deliberately obtuse; worked with the slow students
(n) perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers, Syn.Liatris pycnostachya
(adv) in a concentrated manner, Syn.thickly, Ant.thinly, Example: old houses are often so densely packed that perhaps three or four have to be demolished for every new one built; a thickly populated area
a. [ L. densus; akin to Gr. &unr_; thick with hair or leaves: cf. F. dense. ] 1. Having the constituent parts massed or crowded together; close; compact; thick; containing much matter in a small space; heavy; opaque; as, a dense crowd; a dense forest; a dense fog. [ 1913 Webster ]
All sorts of bodies, firm and fluid, dense and rare. Ray. [ 1913 Webster ]
To replace the cloudy barrier dense. Cowper. [ 1913 Webster ]
n. 1. an instrument for determining optical or photographic density. A variety capable of measuring optical density of a sample at a number of different wavelengths, is called a spectrophotometer. [ WordNet 1.5 ]
n. [ L. densitas; cf. F. densité. ] 1. The quality of being dense, close, or thick; compactness; -- opposed to rarity. [ 1913 Webster ]
2. (Physics) The ratio of mass, or quantity of matter, to bulk or volume, esp. as compared with the mass and volume of a portion of some substance used as a standard. [ 1913 Webster ]
☞ For gases the standard substance is hydrogen, at a temperature of 0° Centigrade and a pressure of 760 millimeters. For liquids and solids the standard is water at a temperature of 4° Centigrade. The density of solids and liquids is usually called specific gravity, and the same is true of gases when referred to air as a standard. [ 1913 Webster ]
3. (Photog.) Depth of shade. Abney. [ 1913 Webster ]
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