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secondary rainbow
noun
- a faint rainbow formed by light rays that undergo two internal reflections in drops of rain, appearing above the primary rainbow and having its colors in the opposite order.
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Word History and Origins
Origin of secondary rainbow1
First recorded in 1785–95
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Example Sentences
Why are the colours of the secondary rainbow fainter than those of the primary?
From Project Gutenberg
Very commonly a secondary rainbow is seen, concentric with the primary bow, and having a radius of about 50 degrees.
From Project Gutenberg
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