outermost

adjective

out·​er·​most ˈau̇-tər-ˌmōst 

: farthest out

Synonyms of outermost

• farthest

Examples of outermost in a Sentence

The arrow hit the outermost ring on the target.

the outermost planet in our solar system

Recent Examples on the Web

These outermost layers are held together by microscopic hooks, making sea otter coats essentially waterproof. —Encyclopedia Britannica, 8 Apr. 2026

Most people never get to experience a total solar eclipse, when the moon blots out the disk of the sun and reveals its fiery outermost atmospheric layer, or corona. —Meghan Bartels, Scientific American, 6 Apr. 2026

The scientists found the three innermost stars are more massive and hotter than the sun, while the outermost component, the fourth star, is cooler, less massive and thus similar to the sun. —Robert Lea, Space.com, 3 Mar. 2026

Keep the application away from the center trunk and sprinkle it on the ground around the drip line or the outermost branches. —Mary Marlowe Leverette, Southern Living, 28 Feb. 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for outermost

• diagnosed
• easternmost
• innermost
• lowermost
• milepost
• northernmost
• rearmost
• southernmost
• uppermost
• uttermost
• westernmost
• almost

Kids Definition

outermost

adjective

out·​er·​most ˈau̇t-ər-ˌmōst 

: farthest out