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aurora australis

noun

aurora aus·​tra·​lis -ȯ-ˈstrā-ləs How to pronounce aurora australis (audio)
-ä-ˈstrā-
: an aurora that occurs in earth's southern hemisphere

called also southern lights

Examples of aurora australis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Also known as the aurora borealis in the north, (or aurora australis in the Southern Hemisphere) these night sky events get their start on the sun’s surface after coronal mass ejections (CMEs) spew ionized clouds of high energy particles towards Earth. Andrew Paul, Popular Science, 12 Nov. 2025 When the light display is in the southern hemisphere, it is referred to as the southern lights or aurora australis. Bebe Hodges, Cincinnati Enquirer, 12 Nov. 2025 This also occurs in the Southern Hemisphere, where it is known as the aurora australis, or southern lights. Shane Croucher, MSNBC Newsweek, 6 Nov. 2025 Besides these dangers though, space weather can create beautiful light shows in the sky called Northern Lights, or aurora borealis, and Southern Lights, or aurora australis. Samuel Badman, The Conversation, 6 Oct. 2025 See All Example Sentences for aurora australis

Word History

Etymology

New Latin, literally, southern dawn

First Known Use

circa 1734, in the meaning defined above

Time Traveler
The first known use of aurora australis was circa 1734

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Cite this Entry

“Aurora australis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aurora%20australis. Accessed 29 Nov. 2025.

Kids Definition

aurora australis

noun
aurora aus·​tra·​lis -ȯ-ˈstrā-ləs How to pronounce aurora australis (audio)
-ä-ˈstrā-
: a display of light that is the same as the aurora borealis but occurs in the southern hemisphere

called also southern lights

Last Updated: - Updated example sentences
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