pulsar

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++pul·sar /ˈpʌlsɑː $ -sɑːr/ noun [countable]  TTSan object like a star that is far away in space and produces radiation and radio waves 脉冲星 → 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)

pul·sar nounChineseSyllable  

like a Corpus that an object star is

pulsar
pul‧sar /ˈpʌlsɑː $ -sɑːr/ noun [countable]an object like a star that is far away in space and produces radiation and radio waves ⇨ quasar
     

THESAURUS

■ in the sky
   ▪ star a large ball of burning gas in space, which can be seen at night as a point of light in the sky: The dark night sky was clear and full of stars.
   ▪ planet one of the large objects that goes around the sun, for example the Earth, Saturn, Mercury, or Mars: The planet Uranus was discovered in 1781.
   ▪ sun the star that gives us light and heat, around which the planets move. There are also many millions of other suns in the universe: The sun came out from behind a cloud. | a dying sun
   ▪ moon the round object that moves around the Earth every 28 days, or a similar object that goes around another planet: The moon rose in the night sky. | Titan is one of the moons of Saturn.
   ▪ asteroid a mass of rock that moves around the sun. Most asteroids are found between Jupiter and Mars: the asteroid belt
   ▪ pulsar a type of star that is far away in space and produces radiation and RADIO WAVES
   ▪ quasar an object like a star that is far away in space and shines extremely brightly
   ▪ supernova a very large exploding star
   ▪ constellation a group of stars that forms a particular pattern and has a name: The constellation of Orion is one of the most easily recognizable patterns of stars in the night sky.
   ▪ galaxy one of the large groups of stars that make up the universe: Astronomers have detected a galaxy 11 billion light years away.
   ▪ the universe all space, including all the stars and planets: How many planets in the universe have life?

pul·sarBrE /ˈpʌlsɑː(r)/ 🔊NAmE /ˈpʌlsɑːr/ 🔊 noun (astronomy 天文学) a star that cannot be seen but that sends out regular rapid radio signals 脉冲星  ➡  compare quasar