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

  • n. Any of several celestial radio sources emitting short intense bursts of radio waves, x-rays, or visible electromagnetic radiation at regular intervals, generally believed to be rotating neutron stars.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. : A rotating neutron star that emits radio pulses periodically

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation


From pulse1, by analogy with quasar.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From pulsating star, patterned after quasar. (Wiktionary)



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