optimal

adjective

op·​ti·​mal ˈäp-tə-məl 

: most desirable or satisfactory : optimum

the optimal use of class time

the optimal dosage of medication for a patient

conditions for optimal development

optimality

ˌäp-tə-ˈma-lə-tē 

noun

optimally

ˈäp-tə-mə-lē 

adverb

Examples of optimal in a Sentence

He keeps his engine tuned for optimal performance.

Under optimal conditions, these plants grow quite tall.

Recent Examples on the Web

This exceptional adventure combines the stunning beauty of Arctic landscapes with the rare spectacle of the 2026 total solar eclipse, as the experienced crew ensures optimal positioning for an unforgettable eclipse-viewing experience. —Daisy Dobrijevic, Space.com, 8 Feb. 2025

He was sold an ambitious project by Unai Emery, noting how forwards like him reached their optimal under his coaching. —Jacob Tanswell, The Athletic, 8 Feb. 2025

This way, both parts of the egg are cooked at their optimal temperatures without needing to crack the shell open. —Michelle Aslam, NPR, 8 Feb. 2025

Instead of using supplements, try to incorporate antioxidant-rich, nutritious foods into your diet for optimal health benefits. —Jennifer Lefton, Ms, Rd/n, Cnsc, Fand, Verywell Health, 7 Feb. 2025

Word History

Etymology

optim(um) + -al entry 1

First Known Use

1890, in the meaning defined above

Phrases Containing optimal

• sub-optimal

Kids Definition

optimal

adjective

op·​ti·​mal ˈäp-tə-məl 

: optimum entry 2

optimally

-mə-lē 

adverb

Medical Definition

optimal

adjective

op·​ti·​mal ˈäp-tə-məl 

: most desirable or satisfactory : optimum

optimal concentrations of a drug

optimality

ˌäp-tə-ˈmal-ət-ē 

noun

plural optimalities

optimally

-mə-lē 

adverb