What does optimising mean?
Optimising is the British-English present participle of optimise, meaning to improve something by making it work more efficiently, effectively, or successfully. It is common in technical and organisational contexts involving systems, processes, performance, resources, costs, and results. For example, a developer may be optimising an algorithm, while a business team optimises a supply chain or marketing campaign. The word has a positive, purposeful connotation: it suggests careful adjustment to reach the best possible outcome, rather than merely making an unspecified improvement. Its American spelling is optimizing, with the same pronunciation and meaning. The present participle can stand alone as a gerund, follow the verb “be,” or appear before a noun as a participial adjective. In general usage, “improving” may be more familiar, while “optimising” is especially precise when efficiency or measurable performance is the focus.
To improve a process, system, or result by making it more efficient, effective, or valuable.
"They are optimising the production line to reduce waste."
Used as the present participle of optimise, with British spelling.
Describing a person, thing, or process that performs optimisation.
"The new optimising tool identified unnecessary costs in the workflow."
This is a participial use of the verb and is especially common in technical language.
Optimising is the verb for turning good enough into measurably better.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does optimising come from?
Optimising comes from the verb optimise, which was borrowed into English from French and ultimately from Latin optimus, meaning “best.” The related English words optimum, optimal, optimistic, and optimism also reflect this Latin root through different branches of derivation. The present-participle form with -ing is formed directly from the verb in the usual English way.
Related word forms
How optimising is actually used
The -ising spelling is standard in British English and many Commonwealth varieties; American English generally uses optimizing. The form functions as both a present participle and a gerund, and it can also be used attributively before a noun, as in “optimising algorithm.”
Easily confused with optimising
Optimising is the standard British spelling, while optimizing is the standard American spelling of the same present participle.