nebula

noun neb·u·la \ ˈne-byə-lə \

Definition of nebula

plural nebulae play \ˈne-byə-ˌlē, -ˌlī\ also nebulas
1 : any of numerous clouds of gas or dust in interstellar space
2 : galaxy 1b; especially : a galaxy other than the Milky Way galaxy not used technically

nebular

play \ˈne-byə-lər\ adjective

nebula was our Word of the Day on 11/22/2015. Hear the podcast!

Recent Examples of nebula from the Web

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Did You Know?

Nebula comes to us from Latin, where it meant "mist" or "cloud." In its earliest English uses in the 1600s, nebula referred to a cloudy speck or film on the eye that caused vision problems. It was first applied to great interstellar clouds of gas and dust in the early 1700s. The adjective nebulous comes from the same Latin root as nebula, but the first uses of nebulous don't appear in English until the late 1700s, well after the discovery of interstellar nebulae.

Origin and Etymology of nebula

New Latin, from Latin, mist, cloud; akin to Old High German nebul fog, Greek nephelē, nephos cloud


NEBULA Defined for English Language Learners

nebula

noun

Definition of nebula for English Language Learners

  • : a cloud of gas or dust in space that can sometimes be seen at night

  • : a group of stars that are very far away and look like a bright cloud at night


NEBULA Defined for Kids

nebula

noun neb·u·la \ ˈne-byə-lə \

Definition of nebula for Students

plural nebulae \-ˌlē\ or nebulas
1 : any of many clouds of gas or dust seen in the sky among the stars
2 : galaxy 2

Medical Dictionary

nebula

noun neb·u·la \ ˈneb-yə-lə \

medical Definition of nebula

plural nebulas or nebulae play \-ˌlē, -ˌlī\
: a slight cloudy opacity of the cornea

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