Pulsar meaning

pŭl'sär'
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.
noun
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A rotating neutron star that emits electromagnetic radiation, esp. radio waves, at short and very regular intervals.
noun
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A rapidly spinning neutron star that emits radiation, usually radio waves, in narrow beams focused by the star's powerful magnetic field and streaming outward from its magnetic poles. Because the pulsar's magnetic poles do not align with the poles of its rotational axis, the beams of radiation sweep around like the beacon of a lighthouse and are thus observed on Earth as short, regular pulses, with periods anywhere between 1 millisecond and 4 seconds.
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Origin of pulsar

  • From puls(ating st)ar (influenced by quasar)
    From American Heritage Dictionary of the English Language, 5th Edition