interstellar
1. [ adjective ] between or among stars
Examples:

"the density of hydrogen in interplanetary and interstellar space"

Related terms: star
Similar spelling:   intercellular
  interstate
  interstice
  interiorise
  intersperse
  intercourse
  interstitial
  interspersal
  intercalary
  interrupter
  intermediary
  interpellate
  internist
  intersect
  interpose
  interlobular
  interstratify
  interested
  internally
  interfere
  interest_rate
  interestedness
  interpellation
  interferon
  intercostal
  interiorize
  interactive
  intermural
  interrelate
  interrupted
  interschool
  intersexual
  intervenor
  interpreter
  interfering
  interrelated
  interrogate
  intercessor
  interceptor
  intermittent
  interviewer