(adj) most desirable possible under a restriction expressed or implied, Syn. optimal, Example:an optimum return on capital; optimal concentration of a drug
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
adj. Best possible or most desirable; -- usually under a restriction expressed or implied; as, an optimum return on capital; optimum concentration of a drug; an optimum result. Syn. -- optimal. [ WordNet 1.5 ]