protostar.

A forming star that is still gathering and contracting material before stable main-sequence hydrogen fusion begins.

Use it for

Words that belong together

• embedded protostar
• protostellar disk

On the page

Infrared cameras revealed a protostar inside the dusty cloud.

The protostar drew material inward through a surrounding disk.

Usage notes

Primary category: sci-fi. Forms: Singular: protostar; plural: protostars. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.