- The definition of aurora borealis is a well known light display in the Northern Hemisphere created by colliding charged particles in the atmosphere.
An example of Aurora Borealis is the light display also known as the Northern Lights.
Aurora borealis is also called the northern lights or polar lights.
Origin of aurora borealisClassical Latin literally , northern aurora: see Aurora and amp; Boreas
nounpl. aurora bo·re·al·is·es or aurorae borealis
Origin of aurora borealisNew Latin aurōra boreālis : Latin aurōra, dawn + Latin boreālis, northern.