nebula

名词 n.
中文释义
发音 neb'jə-lə

英文释义

名词 n.
  1. A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).
    — Approximately 5 billion years ago, our solar nebula was formed as gravitational forces pulled interstellar gas and dust into a swirling mass around out newly formed sun.
  2. A white spot or slight opacity of the cornea. archaic
  3. A cloudy appearance in the urine. obsolete

词形变化

nebulae plural nebulas plural nebulæ archaic,plural

词汇关系

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

词源

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”).
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