outermost

adjective

out·​er·​most ˈau̇-tər-ˌmōst How to pronounce outermost (audio)
: 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.
The shock wave in combination with high-energy burst could alter the planet’s atmosphere or strip away its outermost protective ozone layer, exposing life to harmful cosmic radiation. David Bressan, Forbes, 17 Mar. 2025 When that activity is low, the Earth receives less radiation, and the outermost atmospheric layer cools and contracts before expanding again. Sharon Udasin, The Hill, 10 Mar. 2025 But skin-care products and habits, like harsh chemical exfoliants and cleansing too often (yes, that’s a thing), can inadvertently harm the skin's moisture barrier, which is the outermost layer of the skin (also known as the epidermis) that guards against external stressors. Sarah Han, Allure, 4 Mar. 2025 Specifically, seismic waves that had traveled through the outermost region of the core were the ones that appeared variable, suggesting the shape-shifting is happening around the inner core’s exterior boundary. Sara Hashemi, Smithsonian Magazine, 12 Feb. 2025 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

Browse Nearby Words

Cite this Entry

“Outermost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outermost. Accessed 4 Apr. 2025.

Kids Definition

outermost

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

More from Merriam-Webster on outermost

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!