neutron star

noun

: a dense celestial object that consists primarily of closely packed neutrons and that results from the collapse of a much larger stellar body

Examples of neutron star in a Sentence

Recent Examples on the Web

Magnetars are neutron stars—the highly dense, collapsed cores of exploded stars—with powerful magnetic fields. —Margherita Bassi, Smithsonian Magazine, 7 May 2025

Overlaying Chandra's X-ray data (shown in bright blue) with the radio data reveals the likely cause of the fracture to be an impact from a pulsar, a rapidly spinning neutron star that sends out pulses of radiation at regular intervals. —Stefanie Waldek, Space.com, 7 May 2025

Magnetars are an extremely bright type of neutron star with an incredibly powerful magnetic field. —Ashley Strickland, CNN Money, 3 May 2025

As a type of neutron star, magnetars typically form when sufficiently massive stars go supernova—but they are distinguished by having magnetic fields around a trillion times stronger than the one that surrounds the Earth. —Ian Randall, MSNBC Newsweek, 30 Apr. 2025

Word History

First Known Use

1934, in the meaning defined above

Rhymes for neutron star

• abattoir
• alcazar
• autocar
• avatar
• belshazzar
• caviar
• caviare
• cinnabar
• commissar
• condylar
• deodar
• handlebar

Kids Definition

neutron star

noun

: a very dense object in space that consists of closely packed neutrons and is produced by the collapse of a much larger star