circumzenithal arc


cir·​cum·​zenithal arc
: a bright rainbow-colored circular halo arc about the zenith as center convex to the sun and about 46 degrees above it

Word History


International Scientific Vocabulary circum- + zenithal; originally formed as French circumzénithal

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Dictionary Entries Near circumzenithal arc

Cite this Entry

“Circumzenithal arc.” Dictionary, Merriam-Webster, Accessed 22 May. 2024.

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