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

Colliding neutron stars create kilonovae, with brilliant electromagnetic flashes. —Ethan Siegel, Big Think, 22 Sep. 2025

This means the light emitted from these larger accretion disks is in the ultraviolet region of the electromagnetic spectrum, while the electromagnetic radiation from the disks around neutron stars is in the form of X-rays, which are higher in energy. —Robert Lea, Space.com, 18 Sep. 2025

In the 10 years since then, scientists have detected hundreds of black holes coming together, as well as other extreme cosmic events like neutron stars colliding and black holes merging with a neutron star. —Nell Greenfieldboyce, NPR, 11 Sep. 2025

Among these new discoveries is a neutron star–black hole merger. —Chad Hanna, The Conversation, 10 Sep. 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