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Interstellar medium
Noun
Word Frequency:
0.3
Definitions
1.
Noun
The matter that exists in the space between star systems in a galaxy, including gas, dust, and cosmic rays.
Synonyms
intergalactic medium
circumgalactic medium
interstellar space
interplanetary space
intershell
interspace
intermedium
intermundium
interstitium
local interstellar cloud
deep space
interstition
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