Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A compact, extremely bright celestial object whose power output can be hundreds to several thousand times that of the entire Milky Way galaxy. Quasars are among the most distant objects in the universe and are generally considered to be a form of active galactic nucleus.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun astronomy 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.

  • noun a starlike object that may send out radio waves and other forms of energy; many have large red shifts

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[From earlier quas(i-stell)ar (radio source).]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From quasi-stellar radio source.

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  • A strain of medical marijuana.

    January 15, 2010