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primary rainbow

noun
1.
the most commonly seen rainbow, formed by light rays that undergo a single internal reflection in a drop of water.
Origin
1785-1795
1785-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for primary rainbow
  • The second rainbow is dimmer than the lower, primary rainbow.
  • The rainbow normally seen is called the primary rainbow.
  • The interior color on the primary rainbow is red, and violet is a secondary rainbow.

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Word Value for primary

14
15
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