circumgalactic medium

noun

The gas and plasma in the region surrounding a galaxy, beyond the galactic disc or ovoid, or interstellar medium (ISM), but within the galaxy's virial radius.

Similar
CGM
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nouncircumgalactic medium (countable and uncountable, plural circumgalactic mediums or circumgalactic media)

plural circumgalactic mediums · plural circumgalactic media

  1. countableuncountableplasma physicsastronomyThe gas and plasma in the region surrounding a galaxy, beyond the galactic disc or ovoid, or interstellar medium (ISM), but within the galaxy's virial radius.

    Synonyms: CGM

Synonyms & antonyms

nounThe gas and plasma in the region surrounding a galaxy, beyond the galactic disc or ovoid, or interstellar medium (ISM), but within the galaxy's virial radius.

Similar
CGM
Cite this entry
APA

circumgalactic medium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/circumgalactic%20medium

MLA

“circumgalactic medium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/circumgalactic%20medium. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “circumgalactic medium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/circumgalactic%20medium.

Source: circumgalactic medium on Wiktionary, CC BY-SA 4.0.