high pressure
noun /ˌhaɪ ˈpreʃə(r)/
/ˌhaɪ ˈpreʃər/
[uncountable]- the condition of air, gas, or liquid that is kept in a small space by force
- at high pressure Water is forced through the pipes at high pressure.
- a condition of the air that affects the weather, when the pressure is higher than average
- The rain will be followed by warmer, drier weather as areas of high pressure move in.