astrobiology

noun

as·​tro·​bi·​ol·​o·​gy ˌa-strō-(ˌ)bī-ˈä-lə-jē How to pronounce astrobiology (audio)
astrobiologist noun

Examples of astrobiology in a Sentence

Recent Examples on the Web
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That’s the compelling argument made by Caleb Scharf—author and senior scientist for astrobiology at NASA Ames Research in Moffett Field, Calif.—in his new book The Giant Leap: Why Space Is the Next Frontier in the Evolution of Life. Jeffrey Kluger, Time, 22 Oct. 2025 Repurposing that vintage kit for in-depth astrobiology was difficult—not least of all because of how hard the resulting data were to work with. Jacek Krywko, Scientific American, 30 Sep. 2025 Perseverance was built upon previous rover designs like Opportunity and Curiosity, but with a sharper focus on astrobiology and the long-term goal of returning Martian samples to Earth. Kenna Hughes-Castleberry, Space.com, 3 Sep. 2025 Some people believe that astrobiology is just a catchy buzzword used to garner headlines and secure funding. Big Think, 7 Aug. 2025 See All Example Sentences for astrobiology

Word History

Etymology

astro- + biology

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of astrobiology was in 1898

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Cite this Entry

“Astrobiology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astrobiology. Accessed 7 Nov. 2025.

Medical Definition

astrobiology

noun
as·​tro·​bi·​ol·​o·​gy -(ˌ)bī-ˈäl-ə-jē How to pronounce astrobiology (audio)
plural astrobiologies

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