aurora borealis

noun

aurora bo·​re·​al·​is -ˌbȯr-ē-ˈa-ləs How to pronounce aurora borealis (audio)
: an aurora that occurs in earth's northern hemisphere

called also northern lights

Examples of aurora borealis 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.
Northern lights adventures have been particularly appealing over the last couple of years, as the sun is currently in the solar maximum phase of its 11-year cycle, meaning the aurora borealis is at its most active through 2026. Lydia Price, Travel + Leisure, 13 Nov. 2025 The lights, also known as the aurora borealis, have been spotted over long stretches in a number of states starting Tuesday night, including in Idaho, Iowa, Missouri, New Mexico, New York, Oklahoma, South Dakota, Tennessee, Texas, Washington, and even as far south as Florida and Alabama. Connor Greene, Time, 13 Nov. 2025 The aurora borealis was spotted in a large swath of states, including Tennessee, New York, New Mexico and Idaho. Brittney Melton, NPR, 13 Nov. 2025 Wisconsinites have been treated to multiple displays of northern lights this week, as strong geomagnetic storms have led aurora borealis to light up the night sky across the northern United States. Maia Pandey, jsonline.com, 13 Nov. 2025 See All Example Sentences for aurora borealis

Word History

Etymology

New Latin, literally, northern dawn

First Known Use

1707, in the meaning defined above

Time Traveler
The first known use of aurora borealis was in 1707

Browse Nearby Words

Cite this Entry

“Aurora borealis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aurora%20borealis. Accessed 23 Nov. 2025.

Kids Definition

aurora borealis

noun
aurora bo·​re·​al·​is -ˌbōr-ē-ˈal-əs How to pronounce aurora borealis (audio)
-ˌbȯr-
: broad bands of light that have a magnetic and electrical source and that appear in the sky at night especially in the arctic region

called also northern lights

More from Merriam-Webster on aurora borealis

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!