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

Since then, along with its fellow detectors Virgo and KAGRA, LIGO has detected gravitational waves from many mergers between pairs of black holes, pairs of ultra-dense neutron stars — and even mixed mergers between a black hole and a neutron star. —Robert Lea, Space.com, 1 June 2026

Several other similar observatories have come online since then to glimpse hundreds of additional events, but all this activity represents a narrow range of gravitational waves—those created when neutron stars or relatively small black holes collide. —Phil Plait, Scientific American, 15 May 2026

Gamma rays are the most energetic type of light rays, typically marking the last gasp of a dying star or the cataclysmic clap of two neutron stars. —Quanta Magazine, 6 May 2026

Once a star dies, there are a number of possible fates that can ensue as well, as a stellar corpse can remain as a white dwarf, a neutron star, or a black hole. —Big Think, 14 Apr. 2026

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