supershell
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English[edit]
Etymology[edit]
Noun[edit]
supershell (plural supershells)
- (astronomy) 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 that without, larger than any single supernova could create.
Synonyms[edit]
- (astronomy): superbubble
Coordinate terms[edit]
(space plasmas):