| Meaning | The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit). |
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| Synonyms | pressure, pressure level |
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| Narrower | blood pressure | The pressure of the circulating blood against the walls of the blood vessels |
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| 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 / liquid measured in terms of the vertical height of a column of the liquid / liquid needed to produce the same pressure |
| intraocular pressure, IOP | pressure exerted by the fluids inside the eyeball |
| 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 |
| radiation pressure, corpuscular-radiation pressure | The minute pressure exerted on a surface normal to the direction of propagation of a wave |
| sound pressure, instantaneous 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 |
| Broader | physical phenomenon | A natural phenomenon involving the physical properties of matter and energy |
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| Spanish | presión |
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| Catalan | pressió |
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