pressure gradient

American  

noun

Meteorology.

1. the change in atmospheric pressure per unit of horizontal distance in the direction in which pressure changes most rapidly.

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pressure gradient British  

noun

1. the change of pressure per unit distance See adverse pressure gradient favourable pressure gradient

2. meteorol the decrease in atmospheric pressure per unit of horizontal distance, shown on a synoptic chart by the spacing of the isobars

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Etymology

Origin of pressure gradient

First recorded in 1915–20

Example Sentences

Among the most promising approaches involves operating a reactor in high-confinement mode, a regime characterized by the formation of a steep pressure gradient at the plasma's edge that offers enhanced plasma confinement.

From Science Daily • Jun. 5, 2024

In addition to this difference in pressure, or pressure gradient, winds accelerate as they are squeezed through canyons and passes, creating a Venturi effect — much like a nozzle on a garden hose.

From Los Angeles Times • Jul. 23, 2022

Pleural pressure gradient leads to increased ventilation further down in the lung.

From Textbooks • Jun. 9, 2022

Because this pressure gradient exists, oxygen diffuses down its pressure gradient, moving out of the alveoli and entering the blood of the capillaries where O2 binds to hemoglobin.

From Textbooks • Jun. 9, 2022

Figure 31.19 Fluid from the capillaries moves into the interstitial space and lymph capillaries by diffusion down a pressure gradient and also by osmosis.

From Textbooks • Jun. 9, 2022