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liquid crystals
Science; General science
A state of matter with an orientational order of building units—individual molecules or their aggregates—and complete or partial absence of the long-range positional order. Liquid ...
immunity
Science; General science
A state of resistance to an agent, the pathogen, that normally produces an infection. Pathogens include microorganisms such as bacteria and viruses, as well as larger parasites. ...
immunological deficiency
Science; General science
A state wherein the immune mechanisms are inadequate in their ability to perform their normal function, that is, the elimination of foreign materials (usually infectious agents ...
marine boiler
Science; General science
A steam boiler designed to suit the marine environment and generally arranged to supply steam to the main propulsion machinery, ship's service electric generators, feed-pump ...
fire-tube boiler
Science; General science
A steam boiler in which hot gaseous products of combustion pass through tubes surrounded by boiler water. The water and steam in fire-tube boilers are contained within a ...
water-tube boiler
Science; General science
A steam boiler in which water circulates within tubes and heat is applied from outside the tubes. The outstanding feature of the water-tube boiler is the use of small tubes ...
steam jet ejector
Science; General science
A steam-actuated device for pumping compressible fluids, usually from subatmospheric suction pressure to atmospheric discharge pressure. A steam jet ejector is most frequently ...
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