“Optimized” or “Optimised”—What's the difference?

Usage by country

Where each spelling is used

Of the 12 countries below, 8 prefer “optimized” and 2 prefer “optimised”. Usage levels are out of 100; the more common spelling in each country is in bold.

Usage level out of 100 (if available).
Country	optimized	optimised	Preference
United States	98	2	“optimized”
United Kingdom	49	51	“optimised”
India	78	22	“optimized”
Philippines	96	4	“optimized”
Canada	95	5	“optimized”
Australia	48	52	“optimised”
Liberia	0	0	Not enough data
Ireland	60	40	“optimized”
New Zealand	55	45	“optimized”
Jamaica	100	0	“optimized”
Trinidad & Tobago	100	0	“optimized”
Guyana	0	0	Not enough data

Usage

Examples in context

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

“optimized”

…meaning that they were not optimized for a particular route.
…in the trial functions and optimized with respect to parameters of…
…lights and camera focus are optimized.
…the heart of the WebSphere Optimized Local Adapters
U.S. flex-fuel vehicles are optimized to run on a maximum…
…which the design has been optimized, is the measurement of the…
…which is needed to be optimized.
…the patient care are defined, optimized and sequenced either by hour…
…of the 1950s were not optimized for speed and cost (not…
…a Music mode which includes optimized channel delays, and adds user…

“optimised”

…make the default font one optimised towards onscreen display: "We believed…
The typical switcher is optimised for its job, being relatively…
…a modular engineering design and optimised plasma, MHD and magnetic field
Optimised for aerobatic speed and agility…
…expected in such a highly optimised system.
…that such effects were paradoxically optimised if claims made by the…
The circuitry modifications were optimised to replicate the sound of…
…Destruction (AHEAD) ammunition, which although optimised for the air defence role…
Products are optimised for low cost and may…
…to allow producing reasonably well optimised code, despite a quite primitive…

Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.

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