1. applying physical pressure to something, especially to increase pressure in a container or system
Usage: British spelling; American spelling is ‘pressurizing’
2. attempting to persuade or coerce someone by using pressure or force
Usage: British spelling; American spelling is ‘pressurizing’

Examples

• The crew is pressurising the cabin before takeoff.
• They are pressurising the water system to improve flow.
• The gas tank requires pressurising for proper operation.
• Stop pressurising me to make a decision right now.
• The company was pressurising employees to work overtime.
• She felt her parents were pressurising her about her career choice.