—v.t. 1. to make as effective, perfect, or useful as possible.
2. to make the best of.
3. Computers.to write or rewrite (the instructions in a program) so as to maximize efficiency and speed in retrieval, storage, or execution.
4. Math.to determine the maximum or minimum values of (a specified function that is subject to certain constraints).
—v.i. to be optimistic. Also,esp. Brit.,op'ti•mise".