extragalactic.

Situated or originating outside the Milky Way galaxy.

Use it for

Words that belong together

• an extragalactic source
• extragalactic astronomy

On the page

The signal came from an extragalactic source.

The observatory compared the extragalactic object with nearer candidates.

Usage notes

Primary category: sci-fi. Forms: Relational adjective; comparative and superlative normally not used. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.