quasar

noun

qua·​sar ˈkwā-ˌzär 

also -ˌsär

: a region at the center of a galaxy that produces an extremely large amount of radiation

Examples of quasar in a Sentence

Recent Examples on the Web

In other words, this quasar appears older than its years. — Keith Cooper, Space.com, 12 June 2026

But now, the European Space Agency's Euclid Space Telescope has identified a clutch of primordial quasars, dating to some 13 billion years ago—putting them among the oldest of these objects ever found in the universe. — Adam Kovac, Scientific American, 7 July 2026

Word History

Etymology

quasi-stellar

First Known Use

1964, in the meaning defined above

Kids Definition

quasar

noun

qua·​sar ˈkwā-ˌzär 

also -ˌsär

: any of the very distant starlike heavenly objects that give off very strong blue and ultraviolet light and powerful radio waves