secondary rainbow

American  

noun

1. 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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Etymology

Origin of secondary rainbow

First recorded in 1785–95

Example Sentences

NOTES: The start of the game was delayed 26 minutes by rain, during which fans could take in an intensely bright rainbow that appeared beyond the center-field scoreboard, along with a faint secondary rainbow outside it and a few rarely seen narrower bands of color called supernumary rainbows inside the main one.

From Seattle Times