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alkali metal |
any of a group of highly reactive chemical elements, such as sodium and potassium, that are typically univalent cations forming various compounds, but that can be isolated as soft, low-density metals. |
cesium |
a salt compound of cesium and chlorine used in medicine and research as a high-density purification agent; cesium chloride. [1/2 definitions] |
consistency |
the thickness, firmness, stiffness, or density. [1/2 definitions] |
cyclone |
a device using centrifugal force to separate materials according to their density; centrifuge. [1/2 definitions] |
dasymeter |
an instrument for measuring gas density. |
demographic |
of or relating to the study of human populations, involving statistical analysis of size, distribution, density, migration, fertility, and the like. [1/3 definitions] |
demographics |
the characteristics of human populations, as shown by statistical analysis of their size, distribution, migration, density, or the like. |
demography |
the study of human populations, involving statistical analysis of size, distribution, density, migration, fertility, and the like. |
factory farming |
a strictly controlled system of livestock farming in which animals are confined indoors under high density conditions to reduce costs and increase output. |
lead2 |
a chemical element that has eighty-two protons in each nucleus and that occurs in pure form as a very dense, malleable bluish gray metal used in many applications requiring high density, such as radiation shielding, shot, and weights. (symbol: Pb) [1/10 definitions] |
lignite |
a brownish black coal of low density that contains wood. |
osmium |
a chemical element that has seventy-six protons in each nucleus and that occurs as an octavalent ion or in pure form as an extremely hard, dense, brittle bluish metal solid used as a catalyst and esp. in alloys and in electron microscopy because of its extremely high density. (symbol: Os) |
rare1 |
lacking density, as a gas or the atmosphere. [1/4 definitions] |
rarefied |
characterized by a lack of density; thin. [1/3 definitions] |
schlieren |
streaks or regions of a translucent medium, such as a gas or fluid, that differ from the main mass in density and index of refraction. [1/2 definitions] |
substance |
density; body. [1/6 definitions] |
tesla |
a unit of magnetic flux density equal to one weber per square meter. |
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