…the continuous physical force exerted on or against an object by something in contact with it…
…a condition of the atmosphere in which the pressure is above average (e.g., in an anticyclone)…
…a condition of the atmosphere in which the pressure is below average (e.g., in a depression)…
…the inner hull of a submarine, in which approximately atmospheric pressure is maintained when the vessel is submerged…
…a portable oil or kerosene lamp in which the fuel is forced up into the mantle or burner by air pressure in the reservoir, which can be increased by pumping with a plunger…
…an inflatable suit that protects the wearer against low pressure, e.g., when flying at a high altitude…
…the pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls…
…the amount by which the pressure measured in a fluid exceeds that of the atmosphere…
…an airtight pot in which food can be cooked quickly under steam pressure…
…a group that tries to influence public policy in the interest of a particular cause…
…the difference between the instantaneous pressure at a point in the presence of a sound wave and the static pressure of the medium…
…the pressure of a fluid on a body when the body is at rest relative to the fluid…
…the pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis, often used to express the concentration of the solution…
…the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own…
…air or gas pressure greater than that of the atmosphere, as used, e.g., in the artificial ventilation of the lungs…
…an agent of differential mortality or fertility that tends to make a population change genetically…
…the pressure exerted by the weight of the atmosphere, which at sea level has a mean value of 101,325 pascals (roughly 14.6959 pounds per square inch)…
