pulsar Hear it!

pulsar definition

pul·sar (pul′sär′, -sər)

noun

any of several celestial objects, thought to be rotating neutron stars, which emit electromagnetic radiation, esp. radio waves, at short and very regular intervals: abbrev. PSR

Etymology: puls(e) + -ar

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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