noun
pulsar
noun
1
A spinning neutron star that sends out regular bursts of radio waves, detected on Earth as rapid pulses.
"Astronomers first detected a pulsar in 1967."
"The pulsar spins hundreds of times per second."
How to Use Pulsar
Learner’s notesIn plain EnglishA dead, super-dense star that flashes radio signals like a lighthouse as it spins.
Easily confused with
Word Forms
pulsars plural
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Astronomers first detected a _____ in 1967.
Etymology
A blend of "pulsating" and "star," coined in the late 1960s after astronomers Antony Hewish and Jocelyn Bell discovered the first one.