- optimum⇄adj. best or most favorable.
Ex. An optimum population is one of a size and quality best fitted to achieve some social goal (Emory S. Bogardus). - optimum⇄noun 1. the best or most favorable point, degree, or amount, for the purpose.
2. (Biology.) the degree or amount of heat, light, food, moisture, or other condition, most favorable for the reproduction or other vital process of an organism.
E - optimum⇄optimum, noun, pl.-mums,-ma,adjective.