What does pressurized mean?
Pressurized is an adjective describing something whose internal pressure has been increased, sealed, or maintained above the pressure outside it. Its best-known use is in aviation: a pressurized cabin or aircraft has a controlled internal environment that protects passengers and crew from the thin air at high altitude. The word is also used in engineering, diving, transport systems, and scientific contexts for vessels, chambers, and spaces that contain a deliberately adjusted atmosphere. In less formal figurative use, someone who feels pressurized is experiencing considerable pressure to act, meet expectations, or cope with demanding circumstances. This sense often suggests stress caused by responsibility, urgency, or external circumstances rather than physical air pressure. Pressurized is closely related to pressurize and pressurization, and it contrasts with unpressurized or depressurized when describing equipment and enclosed spaces.
Having or maintained at a pressure higher than the surrounding pressure.
"The submarine uses a pressurized hull to withstand the pressure at great depth."
Used chiefly in technical and transport contexts, especially aviation, engineering, diving, and science.
Subjected to intense pressure or pressure to perform.
"She was pressurized by the sudden increase in her workload."
This figurative use is informal and often implies stress or mounting demands.
A pressurized cabin keeps passengers comfortable by reproducing the atmospheric pressure their bodies expect, even when the aircraft is flying high above the air outside.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of pressurized
The word derives from pressure, which comes through Old French from Latin pressura, a noun related to premere, meaning to press. The suffix -ize was added in the 19th century, following the pattern of verbs such as organize and realize, and pressurized was formed as the past tense and past participle of pressurize. Related English words including compress, depress, express, and compression share the same Latin root associated with pressing.
Related word forms
How pressurized is actually used
The technical sense is common in aviation, engineering, diving, and science. The figurative sense is less formal and usually means being under substantial pressure, often from circumstances or responsibilities.
Easily confused with pressurized
Pressurized usually describes something containing or maintained at elevated physical pressure, whereas pressured more often means subjected to psychological, social, or practical pressure.