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aurora

play
noun au·ro·ra \ə-ˈrȯr-ə, ȯ-\

Definition of aurora

plural auroras or auroraeplay \-(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 of aurora

Latin — more at east


First Known Use: 14th century


Aurora

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

Definition of Aurora

  1. 1 city N cen Colorado E of Denver pop 325,078

  2. 2 city NE Illinois pop 197,899

  3. 3 town Canada in SE Ontario pop 53,203




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