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

From private cities to interstellar colonies, tech billionaires like Elon Musk and Peter Thiel have backed experiments designed to operate beyond the borders — and laws — most of us live by. —Ramtin Arablouei, NPR, 23 Apr. 2026

The ratio acts as a record of the chemical environment of 3I/ATLAS' home system, having remained intact throughout the interstellar invader's long journey to the solar system. —Robert Lea, Space.com, 23 Apr. 2026

To achieve this, physicists propose cooling a cloud of radioactive atoms—such as rubidium-83—to temperatures colder than interstellar space. —Prabhat Ranjan Mishra, Interesting Engineering, 20 Apr. 2026

Its data have helped scientists understand pressure fronts and other structures within the interstellar medium that fills the void beyond the edge of the solar system. —Meghan Bartels, Scientific American, 20 Apr. 2026

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