WordNet

having high relative density or specific gravity; "dense as lead"
slow to learn or understand; lacking intellectual acuity; "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"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students" (同)dim, dull, dumb, obtuse, slow
permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom" (同)heavy, impenetrable
hard to pass through because of dense growth; "dense vegetation"; "thick woods" (同)thick
secret; "keep it dark"
absence of light or illumination (同)darkness
an unenlightened state; "he was in the dark concerning their intentions"; "his lectures dispelled the darkness" (同)darkness
showing a brooding ill humor; "a dark scowl"; "the proverbially dour New England Puritan"; "a glum, hopeless shrug"; "he sat in moody silence"; "a morose and unsociable manner"; "a saturnine, almost misanthropic young genius"- Bruce Bliven; "a sour temper"; "a sullen crowd" (同)dour, glowering, glum, moody, morose, saturnine, sour, sullen
marked by difficulty of style or expression; "much that was dark is now quite clear to me"; "those who do not appreciate Kafkas work say his style is obscure" (同)obscure
(used of color) having a dark hue; "dark green"; "dark glasses"; "dark colors like wine red or navy blue"
brunet (used of hair or skin or eyes); "dark eyes"
devoid of or deficient in light or brightness; shadowed or black; "sitting in a dark corner"; "a dark day"; "dark shadows"; "dark as the inside of a black cat"
not giving performances; closed; "the theater is dark on Mondays"
relatively dense in consistency; "thick cream"; "thick soup"; "thick smoke"; "thick fog"
(of darkness) very intense; "thick night"; "thick darkness"; "a face in deep shadow"; "deep night" (同)deep
in quick succession; "misfortunes come fast and thick" (同)thickly
abounding; having a lot of; "the top was thick with dust"
having component parts closely crowded together; "a compact shopping center"; "a dense population"; "thick crowds"; "a thick forest"; "thick hair"
not thin; of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions; "an inch thick"; "a thick board"; "a thick sandwich"; "spread a thick layer of butter"; "thick coating of dust"; "thick warm blankets"
not dense; "a thin beard"; "trees were sparse" (同)thin
in a concentrated manner; "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" (同)thickly
the quality of being mentally slow and limited (同)dumbness, slow-wittedness
a room that is comfortable and secluded
a unit of 8 to 10 cub scouts

PrepTutorEJDIC

『密度が濃い』,密集した,目の詰まった / 《話》頭の鈍い,のろまな
『暗い』やみの / (毛髪・皮膚・目の)『浅黒い』,(色の)濃い / 陰うつな,陰気な(gloomy) / 腹黒い,悪意のある(evil) / 隠した,秘密の / (意味が)明らかでない,なぞめいた / 未発の;無知の / 〈U〉《the~》『やみ』,暗がり(darkness) / 《冠詞なしで》『夜』(night);『日暮れ』(nightfall) / 〈U〉暗い色,濃い陰
『厚い』,分厚い;『太い』 / 《数量を表す名詞の後に用いて》『厚さ…の』,太さ…の / (液体・気体が)『濃い』,濃厚な / 『密な』,密生した,密集した / (なまりが)著しい,ひどい / (声が)はっきりしない,かすれた / (頭が)重い,ぼんやりした / 《話》ばかな,愚かな / 《話》親密な;(…と)親して《+with+名》 / 《補語にのみ用いて》(…で)いっぱいの,満ちた《+with+名》 / 『厚く』,分厚く,濃く,密に / 《the ~》(…)最も厚い(太い,濃い,密な)部分《+of+名》 / 《the ~》(活動などの)たけなわ,まっただ中《+of+名》
希薄な,まばらな,女ない;(頭髪などが)薄い:a sparse population希薄な人口/a sparse beard薄いあごひげ
(野生動物の)巣穴,ほら穴 / 《話》奥まった小部屋;私室 / 隠れ家(が);(特に犯罪者の)根城,巣

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/10/29 06:36:50」(JST)

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Density and dense usually refer to a measure of how much of some entity is within a fixed amount of space. Types of density include:

In physics, density of mass:

Density, mass per unit volume
- The Planck density, the derived unit of density in the Planck unit system (1 Planck mass divided by 1 Planck volume)
Area density or surface density, mass over a (two-dimensional) area
Linear density, mass over a (one-dimensional) line
Bulk density, mass of many particles of a particulate solid or a powder divided by the total volume they occupy
Particle density or true density, density of the particles that make up a particulate solid or a powder
Relative density or specific gravity, a measure of density in comparison to the density of something else
- Vapour density, a relative density used for gases

In physics, densities of entities other than mass:

Number density, number of particles per unit volume, area, or length
Current density, the ratio of electric current to area
Charge density, the electric charge per volume
Energy density, potential energy per unit volume or mass, depending on context
Force density, force per unit volume
Optical density, or Neutral density, the absorbance of an element

In mathematics:

Dense set and nowhere dense set in topology
Dense-in-itself, in topology, is a set that contains no isolated points
Schnirelmann density in number theory
Natural density (also called asymptotic density) in number theory
Lebesgue's density theorem in measure theory
Probability density function, a function which maps probabilities across the real line and whose integral is 1
- Density estimation is the construction of an estimate of a probability density function
- Kernel density estimation, used in statistics to estimate a probability density function of a random variable
Tensor density in differential geometry
Density (graph theory), the fraction of possible edges that exist in a graph
Dense order in order theory
A coinitial subset in the mathematical theory of forcing
Density (polytope) in geometry
Density on a manifold
Dense submodule in abstract algebra

In other scientific fields:

Population density, population per unit area
Areal density (computer storage), bits (how computers store information) over an amount of area or volume
Nutrient density, the proportion of any array of a single nutrient or nutritional factor, or of numerous nutrients in foods, often ordered by different scalar indices
Urban density, in urban planning and urban design

Density can also refer to:

Spiritual density, levels of spiritual evolution, planes of existence or "dimensions" in The Law of One
Stupidity, a stupid person is sometimes referred to as being "dense"

In Arts:

Dense (film), a 2004 film
Density 21.5 – a piece of music for solo flute written by Edgard Varèse

UpToDate Contents

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English Journal

Effects of high pressure modification on conformation and gelation properties of myofibrillar protein.

Zhang Z1, Yang Y2, Zhou P3, Zhang X4, Wang J4.
Food chemistry.Food Chem.2017 Feb 15;217:678-86. doi: 10.1016/j.foodchem.2016.09.040. Epub 2016 Sep 7.
The effects of high pressure (HP) treatment (100-500MPa) on conformation and gelation properties of myofibrillar protein (MP) were investigated. As pressure increased (0.1-500MPa), α-helix and β-sheet changed into random coil and β-turn, proteins unfolded to expose interior hydrophobic and sulfhy
PMID 27664686

Influence of hydrogenated oil as cocoa butter replacers in the development of sugar-free compound chocolates: Use of inulin as stabilizing agent.

Rodriguez Furlán LT1, Baracco Y2, Lecot J3, Zaritzky N3, Campderrós ME2.
Food chemistry.Food Chem.2017 Feb 15;217:637-47. doi: 10.1016/j.foodchem.2016.09.054. Epub 2016 Sep 9.
The effect of the addition of inulin as a surfactant or stability agent on white compound chocolate sweetened with sucralose and Stevia was studied. Samples were stored at 7, 15 and 30°C during 100days and the influence of inulin on rheological properties, sensorial attributes, shelf-life, physical
PMID 27664681

Probing to Observe Neural Dynamics Investigated with Networked Kuramoto Oscillators.

O'Sullivan-Greene E1, Kuhlmann L1,2, Nurse ES1,3,4, Freestone DR1,3,4, Grayden DB1, Cook M3,4, Burkitt A1, Mareels I1.
International journal of neural systems.Int J Neural Syst.2017 Feb;27(1):1650038. Epub 2016 May 3.
The expansion of frontiers in neural engineering is dependent on the ability to track, detect and predict dynamics in neural tissue. Recent innovations to elucidate information from electrical recordings of brain dynamics, such as epileptic seizure prediction, have involved switching to an active pr
PMID 27596927

Polymer mediated layer-by-layer assembly of different shaped gold nanoparticles.

Budy SM1, Hamilton DJ1, Cai Y2, Knowles MK2, Reed SM3.
Journal of colloid and interface science.J Colloid Interface Sci.2017 Feb 1;487:336-347. doi: 10.1016/j.jcis.2016.10.022. Epub 2016 Oct 12.
Gold nanoparticles (GNPs) have a wide range of properties with potential applications in electronics, optics, catalysis, and sensing. In order to demonstrate that dense, stable, and portable samples could be created for these applications, multiple layers of GNPs were assembled via drop casting on g
PMID 27794234

Japanese Journal

Facile wet-chemical synthesis of differently shaped cuprous oxide particles and a thin film: Effect of catalyst morphology on the glucose sensing performance

Neetzel Cornelia,Muench Falk,Matsutani Takaomi,Jaud Jean Christophe,Broetz Joachim,Ohgai Takeshi,Ensinger Wolfgang J.
Sensors and Actuators B: Chemical 214, 189-196, 2015-07-31
… This technique produced electrodes with dense thin film consisting of merged, octahedral cuprite crystals. …
NAID 120005606094

A facile solution combustion synthesis of nanosized amorphous iron oxide incorporated in a carbon matrix for use as a high-performance lithium ion battery anode material

Zhu Chunyu,Saito Genki,Akiyama Tomohiro
Journal of Alloys and Compounds 633, 424-429, 2015-06-05
… Amorphous iron oxide nanoparticles with diameters of about 5 nm were synthesized and uniformly embedded in a dense carbon matrix. …
NAID 120005602525

Liquid phase hydrogenation of phenylacetylene over Pd and PdZn catalysts in toluene: effects of alloying and CO2 pressurization

Yoshida Hiroshi,Zama Toshiaki,Fujita Shin-ichiro,Panpranot Joongjai,Arai Masahiko
RSC Advances 4(47), 24922-24928, 2015-05-19
… The influence of alloying and dense phase CO2 on the rate of conversion and the product selectivity was examined. … The presence of a dense phase of CO2 (1.5 MPa) enhanced the rate of phenylacetylene hydrogenation and the selectivity to styrene for the Pd and PdZn catalysts. … Possible reasons for the positive effects of alloying and dense phase CO2 on the partial hydrogenation of phenylacetylene to styrene are discussed. …
NAID 120005603793

Cell Tracking Under Dense Cell Culture Conditions for Cell Behavior Analysis

Ryoma Bise,Yoichi Sato
情報処理学会研究報告. CVIM, [コンピュータビジョンとイメージメディア] 2015-CVIM-197(31), 1-16, 2015-05-11
… In this paper, we propose cell-tracking methods to address difficulties under dense culture conditions where cell detection cannot be done reliably since cells often touch with blurry intercellular boundaries. …
NAID 110009899586