circumstellar

adjective
cir·​cum·​stel·​lar | \ˌsər-kᵊm-ˈste-lər \

Definition of circumstellar 

: surrounding or occurring in the vicinity of a star circumstellar dust

Examples of circumstellar in a Sentence

Recent Examples on the Web

The newborn star lit up with nuclear fusion, sending light and heat out into the spinning circumstellar disk. Sarah Kaplan, chicagotribune.com, "Many asteroids might be remnants of 5 destroyed worlds, scientists say," 3 July 2018 Nesvorny and many others now think that gravity kicks in once clumps in the circumstellar disk reach the pebble stage, swiftly pulling together massive amounts of material to form a huge new planet. Sarah Kaplan, chicagotribune.com, "Many asteroids might be remnants of 5 destroyed worlds, scientists say," 3 July 2018 As with the circumstellar disk hypothesis, the lack of infrared emission is a problem. Kimberly Cartier, Scientific American, "Have Aliens Built Huge Structures around Boyajian’s Star?," 1 May 2017 Based upon the new data, circumstellar dust—dust that orbits a star—is now the best explanation for Tabby's Star. Eric Berger, Ars Technica, "Dimming of Tabby’s Star likely caused by something less sexy than aliens," 4 Oct. 2017 Dust near a star, known as circumstellar dust, hits the Goldilocks test for what could be causing continued dimming. David Grossman, Popular Mechanics, "Scientists Have a New Theory to Explain 'Alien Megastructure' Star," 4 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'circumstellar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of circumstellar

1951, in the meaning defined above

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The first known use of circumstellar was in 1951

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