1. a rapidly rotating neutron star that emits regular pulses of radio waves or other electromagnetic radiation
Usage: astronomy

Examples

• The pulsar was discovered in 1967 by radio astronomers.
• Scientists use pulsars as cosmic lighthouses to study space.
• The pulsar rotates hundreds of times per second.
• Radio telescopes can detect the regular signals from a pulsar.
• This pulsar emits X-rays as well as radio waves.
• The discovery of pulsars helped confirm theories about neutron stars.