English Explanatory Dictionary

nebula

English dictionary entry

Meanings

noun
  1. A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).
  2. A white spot or slight opacity of the cornea.
  3. A cloudy appearance in the urine.

Pronunciation

neb'jə-lə /ˈnɛbjʊlə/ en-us-nebula.ogg

Word forms

nebula nebulae nebulas nebulæ

Etymology

Borrowed from Latin nebula (“little cloud, mist”). Akin to Ancient Greek νεφέλη (nephélē, “cloud”), German Nebel (“mist, nebula”), Old Norse nifl, Polish niebo (“sky, heaven”), Russian не́бо (nébo, “sky”).

Related words

nebulosity nebulous nebular plerion nova remnant supernova remnant Herbig-Haro object Bok globule interstellar cloud intergalactic cloud high velocity cloud

Derived words

Crab Nebula dark nebula diffuse nebula emission nebula enormous Lyman-alpha nebula nebulalike nebulium nebulization planetary nebula preplanetary nebula protoplanetary nebula pulsar wind nebula reflection nebula solar nebula stellar nebula supernebula
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