negative pressure
"Negative pressure" is crucial in various fields like physics, medicine, and engineering to control air or fluid flow by maintaining a pressure lower than the surrounding environment.
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Definition
B2General
(technical)A condition where the pressure in a specific area is lower than the surrounding atmospheric pressure.
Example
- Negative pressure rooms are used in hospitals to prevent the spread of airborne diseases.
C1Medicine
(technical)A situation where the air pressure inside a room is lower than outside, causing air to flow in and preventing contaminants from escaping.
Example
- The isolation room uses negative pressure to keep harmful particles from spreading.
C2Botany
(academic)The tension in a liquid that allows transpiration in plants by maintaining a lower pressure in the xylem compared to the surrounding environment.
Example
- Negative pressure in the xylem helps plants transport water from roots to leaves.
Similar
Terms that have similar or relatively close meanings to "negative pressure":