What does "superbubble" mean?

A very large region of space, relatively free of matter, carved out of the interstellar medium by the combination of multiple supernova bubbles resulting from supernovae.

What is a synonym for "superbubble"?

Common synonyms include: supershell.

Superbubble

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A very large region of space, relatively free of matter, carved out of the interstellar medium by the combination of multiple supernova bubbles resulting from supernovae.

Synonyms

All synonyms

supershell

Etymology

From super- + bubble.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.