“Pressurized” or “Pressurised”—What's the difference?

Usage by country

Where each spelling is used

Of the 12 countries below, 4 prefer “pressurized” and 4 prefer “pressurised”. Usage levels are out of 100; the more common spelling in each country is in bold.

Usage level out of 100 (if available).
Country	pressurized	pressurised	Preference
United States	97	3	“pressurized”
United Kingdom	18	82	“pressurised”
India	64	36	“pressurized”
Philippines	96	4	“pressurized”
Canada	93	7	“pressurized”
Australia	32	68	“pressurised”
Liberia	0	0	Not enough data
Ireland	25	75	“pressurised”
New Zealand	41	59	“pressurised”
Jamaica	0	0	Not enough data
Trinidad & Tobago	0	0	Not enough data
Guyana	0	0	Not enough data

Usage

Examples in context

Real sentences for each spelling. Hover an example to copy it.

“pressurized”

…was suspected to have released pressurized underground water, previously confined by…
…of two principal parts: a pressurized crew capsule and a booster…
…loaded with 20,000 tons of pressurized propane and butane, in the…
…Class D as well as pressurized and 3-dimensional fires involving both…
…the compressor, where it is pressurized.
…a result, the plane never pressurized.
…so, they are heavily armored, pressurized, and built to withstand a…
…times the aircraft had been pressurized) at the time of the
…varieties of light-water reactors: the pressurized water reactor (PWR), the boiling…
…International Microgravity Laboratory-1 (IML-1), a pressurized crewed Spacelab module, to explore…

“pressurised”

…and marked with a mark, pressurised and turned over several times.
…but the thought of marriage pressurised her.
…monofuel de-composition chamber fed with pressurised isopropyl nitrate (AVPIN), ignited by…
…next aircraft type was the pressurised Airspeed Ambassador.
…the production of its unique pressurised cockpit, the aircraft was not…
…district into Tamil Nadu and pressurised the government to grant them
…typically maintained either by a pressurised water tank serving an urban…
A larger version with pressurised cabin called 90B was planned,…
…paint – similar technique with pressurised aerosol propellant in a can
…water in this structure was pressurised by a 300-tonne weight.

Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.

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