noun
Meaning 1
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.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Qualifier: plasma physics
Topics: astronomy, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided