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pulsar Syllabification: pul·sar
Pronunciation: /ˈpəlˌsär/

Definition of pulsar in English:


A celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of radio waves and other electromagnetic radiation at rates of up to one thousand pulses per second.
Example sentences
  • Black holes, the cosmic microwave background, pulsars, neutron stars, gravitational lenses, gravity waves - these are just a few of the phenomena that would make no sense without general relativity.
  • These emanations come from rapidly spinning neutron stars called pulsars - rotating beacons that periodically send energy in the direction of the earth.
  • The object is being stimulated by jets from a rapidly spinning (about thirty times a second) neutron star called a pulsar.


From puls(ating st)ar, on the pattern of quasar.

Definition of pulsar in:
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