from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An extremely distant, and thus old, celestial object whose power output is several thousand times that of our entire galaxy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An extragalactic object, starlike in appearance, that is among the most luminous and thought to be the most distant objects in the universe.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a starlike object that may send out radio waves and other forms of energy; many have large red shifts
quas(i-stellar) + (st)ar.(American Heritage® Dictionary of the English Language, Fourth Edition)
From quasi-stellar radio source. (Wiktionary)