Rainbow
A rainbow is an optical and meteorological phenomenon caused by precipitation in an atmosphere having a prismatic effect upon white light (typically from a sun), and creating the appearance of an arc of color through the sky.

Despite being able to explain its origins, Spock never contemplated the beauty of a rainbow before succumbing to the effects of the Omicron spores in 2267. ()

In 2364, while suffering from polywater intoxication, Geordi La Forge bemoaned never having seen a rainbow as Doctor Beverly Crusher administered a hypospray. ()

In 2370, Gideon Seyetik painted the following mental picture of Da Vinci Falls for Benjamin Sisko: "Imagine...Water cascading off cliffs the height of Mount Everest and thundering through continuous rainbows, straight into an ocean the color of sapphire wine." ()

In Irish legend, a leprechaun's pot of gold was to be found at the end of a rainbow's arch. In 2376, when Fair Haven inhabitant Seamus asked Tom Paris how to find the pot of gold in Glen Abbey, Paris told him to follow the rainbow. ()

The 1960s Earth band Berman's Rainbow Dreamers took their name from the rainbow, alluding to its multicolored nature in their psychedelic imagery and aesthetic. ()

Two songs performed by Vic Fontaine featured rainbows in the lyrics: "It's Only a Paper Moon" and "I've Got the World on a String". ()

What appeared to be a structure resembling a rainbow was visible outside the Daystrom Institute in Okinawa in 2399. ()

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Meteorology