force per unit area

Definitions of force per unit area
1

n the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)

Synonyms:
pressure, pressure level
Types:
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blood pressure
the pressure of the circulating blood against the walls of the blood vessels; results from the systole of the left ventricle of the heart; sometimes measured for a quick evaluation of a person's health
gas pressure
the pressure exerted by a gas
head
the pressure exerted by a fluid
hydrostatic head
the pressure at a given point in a liquid measured in terms of the vertical height of a column of the liquid needed to produce the same pressure
IOP, intraocular pressure
pressure exerted by the fluids inside the eyeball; regulated by resistance to the outward flow of aqueous humor
oil pressure
pressure that keeps oil on the moving parts of an internal-combustion engine
osmotic pressure
(physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane
corpuscular-radiation pressure, radiation pressure
the minute pressure exerted on a surface normal to the direction of propagation of a wave
instantaneous sound pressure, sound pressure
the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point
suction
a force over an area produced by a pressure difference
vapor pressure, vapour pressure
the pressure exerted by a vapor; often understood to mean saturated vapor pressure (the vapor pressure of a vapor in contact with its liquid form)
acoustic radiation pressure
(acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave
air pressure, atmospheric pressure, pressure
the pressure exerted by the atmosphere
systolic pressure
the blood pressure (as measured by a sphygmomanometer) during the contraction of the left ventricle of the heart
diastolic pressure
the blood pressure (as measured by a sphygmomanometer) after the contraction of the heart while the chambers of the heart refill with blood
arterial pressure
the pressure of the circulating blood on the arteries
venous pressure
the pressure exerted on the walls of the veins by the circulating blood
hypertonicity
(of a solution) the extent to which a solution has a higher osmotic pressure than some other
hypotonicity
(of a solution) the extent to which a solution has a lower osmotic pressure than some other
Type of:
physical phenomenon
a natural phenomenon involving the physical properties of matter and energy

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