aurora

play
noun au·ro·ra \ə-ˈrȯr-ə, ȯ-\

Definition of aurora

plural

auroras

or

aurorae

play \-(ˌ)ē\
  1. 1 :  dawn

  2. 2 capitalized :  the Roman goddess of dawn — compare eos

  3. 3 :  a luminous phenomenon that consists of streamers or arches of light appearing in the upper atmosphere of a planet's magnetic polar regions and is caused by the emission of light from atoms excited by electrons accelerated along the planet's magnetic field lines

auroral

play \-əl\ adjective

aurorean

play \-ē-ən\ adjective

Examples of aurora in a sentence

  1. a gorgeous pink aurora aroused us out of our slumber

Origin and Etymology of aurora

Latin — more at east


First Known Use: 14th century


Aurora

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geographical name Au·ro·ra \ə-ˈrȯr-ə, ȯ-\

Definition of Aurora

  1. 1 city in north central Colorado east of Denver population 325,078

  2. 2 city west of Chicago in northeastern Illinois population 197,899

  3. 3 town north of Toronto in southeastern Ontario, Canada population 53,203


AURORA Defined for English Language Learners


Aurora

play
geographical name Au·ro·ra \ə-ˈrȯr-ə, ȯ-\

Definition of Aurora for English Language Learners

  • : U.S. city, Colorado

  • : U.S. city, Illinois



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