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acetic acid
Science; General science
A colorless, pungent liquid, CH 3 COOH, melting at 16.7°C (62.1°F) and boiling at 118.0°C (244.4°F). Acetic acid is the sour principle in vinegar. Concentrated acid is called ...
turn and bank indicator
Science; General science
A combination instrument which provides an aircraft pilot with two distinct pieces of information: the aircraft's rate of turn about the vertical axis, and the relationship ...
machine
Science; General science
A combination of rigid or resistant bodies having definite motions and capable of performing useful work. The term mechanism is closely related but applies only to the physical ...
immunoelectrophoresis
Science; General science
A combination of the techniques of electrophoresis and immunodiffusion used to separate the components of a mixture of antigens and make them visible by reaction with specific ...
gear train
Science; General science
A combination of two or more gears used to transmit motion between two rotating shafts or between a shaft and a slide. In theory two gears can provide any speed ratio in ...
natural gas
Science; General science
A combustible gas that occurs beneath the surface of the earth, often found in conjunction with petroleum deposits. Its main use is for fuel, but it is also used to make carbon ...
oil furnace
Science; General science
A combustion chamber in which oil is the heat-producing fuel. Fuel oils, having from 18,000 to 20,000 Btu/lb (42 to 47 megajoules/kg), which is equivalent to 140,000 to 155,000 ...
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