intergalactic
adj. C1 Advanced UK //ˌɪntəɡɐlˈæktɪk// in·ter·ga·lac·tic
adj. relating to the space between galaxies. You use this to describe things that are very large or happen across the entire universe.
adj. relating to the space between galaxies or the entire universe. Often used to describe vast distances or cosmic-scale phenomena.
The telescope can see intergalactic clouds of gas.
Astronomers are studying intergalactic dust to understand how galaxies form and evolve over billions of years.
The probe was designed to travel at a speed sufficient to reach intergalactic space within a human lifetime, though such a journey remains a theoretical challenge for current propulsion technology.
From inter- + galactic.