interstellar

adjective

in·​ter·​stel·​lar ˌin-tər-ˈste-lər 

: located, taking place, or traveling among the stars especially of the Milky Way galaxy

Examples of interstellar in a Sentence

Recent Examples on the Web

Using radio observations of ammonia, a molecule abundant in interstellar space and familiar on Earth as a common cleaning agent, astronomers mapped the rotating disk of gas and dust swirling around HW2. —Sharmila Kuthunur, Space.com, 16 May 2025

Voyager 1 is now in interstellar space in the constellation Ophiuchus, in the southern sky beneath the Summer Triangle stars, as seen from the Northern Hemisphere. —Jamie Carter, Forbes.com, 15 May 2025

Other than presenting mission engineers with complex technical issues as the probes enter their 48th year in space, Voyagers 1 and 2 continue sending back data from interstellar space. —Stephen J. Beard, USA TODAY, 9 Jan. 2025

The scintillation pattern indicates that the interstellar material of the source galaxy is acting a bit like a lens that is resolving the event. —John Timmer, Ars Technica, 3 Jan. 2025

Word History

First Known Use

1626, in the meaning defined above

Rhymes for interstellar

• cerebellar
• circumstellar
• columellar
• storyteller
• beller
• cellar
• dweller
• eller
• feller
• meller
• sellar
• seller

Kids Definition

interstellar

adjective

in·​ter·​stel·​lar ˌint-ər-ˈstel-ər 

: located or taking place among the stars

interstellar space