English Explanatory Dictionary

interstellar medium

English dictionary entry

Meanings

noun
  1. The matter that exists in the space between star systems in a galaxy, including gas, dust, and cosmic rays.

Word forms

interstellar medium

Synonyms

ISM

Related words

intracluster medium intergalactic medium interplanetary medium extragalactic medium extra-cluster medium interstellar space interplanetary space intergalactic space extragalactic space deep space near space outer space Earthspace space

Derived words

ISM
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