intragalactic

in·tra·ga·lac·tic

 (ĭn′trə-gə-lăk′tĭk)
adj.
Occurring or situated within the space of a galaxy.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

intragalactic

(ˌɪntrəɡəˈlæktɪk)
adj
occurring or situated within a galaxy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

in•tra•ga•lac•tic

(ˌɪn trə gəˈlæk tɪk)

adj.
existing or occurring within a single galaxy.
[1960–65]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
True, intergalactic (or even intragalactic) travel hasn't happened.
After seventy-eight years of intragalactic space travel at the speed of light, the photons finally reach the earth where they activate the photoreceptors in my eye and the silver halide grains in the film's emulsion.
Best known for her web comic (intragalactic.com), Cherrywell creates a loving homage and sharp, squirmy parody of the girl detective genre with her second graphic novel.
Jets released from SMBHs shoot out like geysers from a galaxy's core, keeping intragalactic gas warm enough to stop star formation in the host galaxy,