Nebula
WordNet
noun
(1) (pathology) a faint cloudy spot on the cornea
(2) An immense cloud of gas (mainly hydrogen) and dust in interstellar space
(3) Cloudiness of the urine
(4) A medicinal liquid preparation intended for use in an atomizer
WiktionaryText
Etymology
From . Akin to Greek νεφέλη, "cloud", German Nebel, "mist", "nebula", Old Norse nifl.
Noun
- A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).
See also
- plerion
- nova remnant
- supernova remnant
- Herbig-Haro object
- Bok globule
- interstellar cloud
- intergalactic cloud
- high velocity cloud