counterpressure

noun
coun·​ter·​pres·​sure | \ ˈkau̇n-tər-ˌpre-shər How to pronounce counterpressure (audio) \
variants: or counter-pressure
plural counterpressures or counter-pressures

Definition of counterpressure

1 : weight or force in a contrary or reverse direction … allow the user to change the firmness of the mattress by adjusting the flow of air, providing a counterpressure to body weight.— Moshe Lewis counterpressure applied to the lower back during labor for pain relief
2 : conflicting or opposing pressure (such as political or social pressure) But some of them might actually need some counterpressure before they can effectively stand up to the illiberal forces growing stronger on so many campuses.— Jonathan Haidt … the internal pressures and counterpressures influencing the Arab world …— Laura Secor

First Known Use of counterpressure

1621 , in the meaning defined at sense 2

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