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supershell

noun

A large region carved out of the interstellar medium by the combination of several supernova shells, leading to a lower density of gas and plasma within than without, larger than any single supernova could create.

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Meanings

nounsupershell (plural supershells)

plural supershells

astronomyA large region carved out of the interstellar medium by the combination of several supernova shells, leading to a lower density of gas and plasma within than without, larger than any single supernova could create.
Synonyms: superbubble

Synonyms & antonyms

nounA large region carved out of the interstellar medium by the combination of several supernova shells, leading to a lower density of gas and plasma within than without, larger than any single supernova could create.

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Origin

From super- + shell.

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Cite this entry

APA

supershell. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/supershell

MLA

“supershell.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/supershell. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “supershell,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/supershell.

Source: supershell on Wiktionary, CC BY-SA 4.0.