outermost

adjective

out·​er·​most ˈau̇-tər-ˌmōst How to pronounce outermost (audio)
Synonyms of outermostnext
: farthest out

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
From 1929 until 2006, Pluto lived in the imagination of children and adults alike as the ninth and outermost planet in our solar system. Big Think, 30 Apr. 2026 Lawmakers, event attendees and some allies of the president saw fault in the correspondents’ dinner security planning, questioning why someone like the shooter could reserve a room at the hotel to sneak in weapons around the outermost layer of security. ABC News, 27 Apr. 2026 These observations suggest that small, mysterious moons with surprisingly different natures are the source of the particles that make up the two outermost rings, and that there are probably even more undiscovered moons to add to the 29 already known around Uranus. Keith Cooper, Space.com, 22 Apr. 2026 These outermost layers are held together by microscopic hooks, making sea otter coats essentially waterproof. Encyclopedia Britannica, 8 Apr. 2026 See All Example Sentences for outermost

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of outermost was in the 14th century

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Cite this Entry

“Outermost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outermost. Accessed 5 May. 2026.

Kids Definition

outermost

adjective
out·​er·​most ˈau̇t-ər-ˌmōst How to pronounce outermost (audio)
: farthest out

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