ecosphere

noun

eco·​sphere ˈē-kō-ˌsfir How to pronounce ecosphere (audio) ˈe-kō- How to pronounce ecosphere (audio)
: the parts of the universe habitable by living organisms
especially : biosphere sense 1

Examples of ecosphere in a Sentence

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.
While in the region, Curiosity recently utilized its onboard Sample Analysis at Mars (SAM) instrument suite, built to search for compounds of the element carbon that are associated with life and investigate ways in which these compounds are generated and destroyed in the Martian ecosphere. Leonard David, Space.com, 21 Apr. 2026 Lamont has made the factual case to Washington that Connecticut offers something Trump genuinely needs: world-class, reliable defense suppliers, deep specialized talent, with an ecosphere of strong local subcontractors, and no-nonsense executives who deliver. Jeffrey Sonnenfeld, Hartford Courant, 29 Mar. 2026 Newson is more fluent in the ecosphere of social media, podcasts and the like. Mark Z. Barabak, Mercury News, 26 Feb. 2026 The Meet Cute acquisition is the latest in a string of Fox investments outside the traditional TV ecosphere. Rick Porter, HollywoodReporter, 4 Nov. 2025 See All Example Sentences for ecosphere

Word History

Etymology

eco- + -sphere, after ecosystem, biosphere

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of ecosphere was in 1953

Browse Nearby Words

Cite this Entry

“Ecosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ecosphere. Accessed 1 May. 2026.

Medical Definition

ecosphere

noun
: the parts of the universe habitable by living organisms
especially : biosphere sense 1
Love words? Need even more definitions?

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

More from Merriam-Webster