circumgalactic medium
noun1
Astronomy, Natural sciences 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.
- Synonyms
- CGM
- Derived terms
- CGM
- Related terms
- intergalactic medium, interplanetary medium, interstellar medium, intracluster medium
- Coordinate terms
- heliosphere, astrosphere, intergalactic cloud, intergalactic medium, interplanetary medium, interstellar cloud, interstellar medium, intracluster medium, nebula, supershell