From Longman Dictionary of Contemporary Englishpulsarpul‧sar /ˈpʌlsɑː $ -sɑːr/ noun [countable] TTSan object like a star that is far away in space and produces radiation and radio waves → quasar
Examples from the Corpus
pulsar• It is therefore another compact star, perhaps even a pulsar.• A variant of the suggestion is that the Sun has a pulsar as a companion.• The observation of slowing down of the orbital rotation of the binary pulsar 1913+16 is also discussed.• At present, parallax measurements for pulsars are few and barely significant.• Subsequent timing observations have shown the pulsar to be in a 5.74-day circular orbit with a low-mass companion.• One of the pulsar's original discoverers, Stanislav Djorjovski, reported finding a brighter star coinciding with the pulsar last November.• The pulsar is probably a different object.• A total of 112 pulse arrival times over a 120-day time interval were collected for this pulsar.Origin pulsar (1900-2000) pulse + -ar (as in quasar) 