Definitions

1. noun

A cloud of gas and dust in space, especially one that is the remains of a star that has exploded.

“The astronomer spent years studying the vast nebulae that filled the galaxy.”

2. plural noun

Nebulae or other celestial objects that are visible to the naked eye.

“The ancient civilizations often believed that the nebulae in the night sky were omens or gods.”

3. noun

A large or confused mass of anything.

“The nebulae of smoke and fog blocked our view of the city.”