extragalactic

[ ek-struh-guh-lak-tik ]

adjective

1. outside the Milky Way system.

extragalactic

/ ˌɛkstrəɡəˈlæktɪk /

adjective

1. occurring or existing beyond the Galaxy

Word History and Origins

Origin of extragalactic¹

First recorded in 1850–55; extra- + galactic

Example Sentences

In 2018, Di Stefano and astrophysicist Nia Imara of the University of California, Santa Cruz suggested searching for planets around extragalactic X-ray binaries.

From Science News

The object’s existence, if confirmed, suggests that there could be many other extragalactic exoplanets waiting to be discovered, astronomers report October 25 in Nature Astronomy.

From Science News