Definitions

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

Etymologies

quas(i-stellar) + (st)ar.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From quasi-stellar radio source. (Wiktionary)

Examples

  • A quasar is a bright object full of energy powered by a black hole.

    Hubble Snaps Image Of 'Strangely Alive' Space Oddity

  • A quasar is a compact region in the center of a massive galaxy surrounding the central supermassive black hole.

    Spitzer Spies Earliest Black Holes | Universe Today

  • Astronomers have discovered the largest and oldest mass of water ever detected in the universe - a gigantic, 12-billion-year-old cloud harboring 140 trillion times more water than all of Earth's oceans combined. supermassive black hole called a quasar located 12 billion light-years from Earth.

    Yahoo! News: Business - Opinion

  • Second, Hanny's Voorwerp was lit up by a powerful beacon of light called a quasar, which formed as a byproduct of the harsh conditions created by a supermassive black hole at the center of the galaxy.

    NPR Topics: News

  • Second, Hanny's Voorwerp was lit up by a powerful beacon of light called a quasar emanating from a supermassive black hole at the center of the galaxy.

    NPR Topics: News

  • A quasar is the heart of a galaxy, consisting of a supermassive black hole.

    PhysOrg.com - latest science and technology news stories

  • A growing black hole, called a quasar, can be seen at the center of a faraway galaxy in this artist's concept.

    Image Gallery

  • The quasar is the orange object at the center of the large, irregular-shaped galaxy.

    Image Gallery

  • A quasar is a star-like object that may send out radio waves and other forms of energy.

    Zee News : India National

  • The researchers studied one of the most distant known galaxies, a so-called quasar with the designation J1148+5251.

    innovations-report

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  • A strain of medical marijuana.

    January 15, 2010