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

Voyager 1 crossed the boundary into interstellar space in 2012, while Voyager 2 crossed the outer edge of our solar system in 2018. —Chris Young, Interesting Engineering, 24 Nov. 2025

Does that mean an alien species could develop interstellar navigational technology without doing science? —Literary Hub, 19 Nov. 2025

First spotted by a ground telescope in Chile, 3I/ATLAS has made waves as just the third-ever interstellar interloper originating from another star spotted in Earth's solar system. —Eric Lagatta, USA Today, 19 Nov. 2025

Callingham and colleagues at the European Space Agency (ESA) first suspected their potential interstellar CME after the LOFAR telescope array detected a short, intense radio signal emission from deep space. —Andrew Paul, Popular Science, 12 Nov. 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