Definitions

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

  • noun Any of several celestial objects emitting periodic, short, intense bursts of radio, x-ray, or visible electromagnetic radiation, generally believed to be quickly rotating neutron stars.

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

  • noun astronomy : A rotating neutron star that emits radio pulses periodically

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

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

Etymologies

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

[From puls(ating st)ar (influenced by quasar).]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From pulsating star, patterned after quasar.

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