- Occurring between two or more points within a galaxy.
- 2006 John C. Hodge, "Scalar potential model of redshift and discrete redshift" arXiv
- 2011 Tilmann Piffl, Mary Williams, Matthias Steinmetz, "Kinematics in galactic tidal tails - A source for Hypervelocity stars?" arXiv
- Generally tidal collisions of satellite galaxy produce stars which escape into the intragalactic space even if the satellite itself is on a bound orbit.
From intra- + galactic.