tr.v., -ized, -izÂ·ing, -izÂ·es.
1. To maintain normal air pressure in (an enclosure, as an aircraft or submarine).
2. To put (gas or liquid) under a greater than normal pressure.
3. To design to resist pressure.
4. To pressure-cook.
5. Informal. To subject to excessive stress, strain, or vexation: an executive who was pressurized by a heavy workload.
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