- 1(also optimal) the best possible; producing the best possible results optimum growth the optimum use of resources the optimum conditions for effective learning
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
- 2the optimum noun [singular] the best possible result, set of conditions, etc. synonym ideal For efficient fuel consumption a speed of 60 mph is about the optimum.
Check pronunciation: optimum