cir·​cum·​stel·​lar ˌsər-kəm-ˈste-lər How to pronounce circumstellar (audio)
: surrounding or occurring in the vicinity of a star
circumstellar dust

Examples of circumstellar in a Sentence

Recent Examples on the Web Some of the stars display the telltale shadow of a circumstellar disk, the makings of future planetary systems. Alan Taylor, The Atlantic, 12 July 2023 At the top left, on the bubble's exterior, orange and red curtains from warm dust emissions are indicative of where ejected material from the exploded star is colliding with surrounding circumstellar gas and dust. Julia Musto, Fox News, 8 Apr. 2023 The Kuiper Belt is a circumstellar disc of material that envelopes the solar system's planets. John Wenz, Discover Magazine, 3 Nov. 2017 One possibility is that a passing star may have knocked Sedna out of the Oort Cloud — a circumstellar cloud of icy space rocks orbiting far from the sun — and onto its current orbit. Eric Betz, Discover Magazine, 2 Feb. 2020 This rotation of the cloud material leads to the formation of a circumstellar disk of matter surrounding the nascent star, which then becomes a crucible for planet formation. Katelyn Allers, Scientific American, 1 Aug. 2021 When stars are born a disk of gas and dust envelops them, forming what is known as a circumstellar disk. Shannon Stirone, Discover Magazine, 18 Nov. 2015 In addition, intense surface winds cause a gaseous cloud known as a circumstellar envelope to form around the star. Jennifer Ouellette, Ars Technica, 29 Mar. 2022 The data revealed evidence of dense circumstellar material around the star at the time of the explosion. Julia Musto, Fox News, 14 Jan. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'circumstellar.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1951, in the meaning defined above

Time Traveler
The first known use of circumstellar was in 1951

Dictionary Entries Near circumstellar

Cite this Entry

“Circumstellar.” Dictionary, Merriam-Webster, Accessed 18 Jul. 2024.

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