Rainbow meaning

rānbō
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An arc or ring containing the colors of the spectrum in consecutive bands, formed in the sky by the refraction, reflection, and dispersion of light in rain or fog.
noun
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A wide range or selection.
noun
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An illusory hope.

Chasing the rainbow of overnight success.

noun
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A multicolored array or assortment.
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A diverse assortment or collection.
noun
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An arc-shaped spectrum of color seen in the sky opposite the Sun, especially after rain, caused by the refraction and reflection of sunlight by droplets of water suspended in the air. Secondary rainbows that are larger and paler sometimes appear within the primary arc with the colors reversed (red being inside). These result from two reflections and refractions of a light ray inside a droplet.
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Of many colors.
adjective
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The definition of a rainbow is an arch in the sky made up of different colors that forms when the sun's rays are refracted by rain drops, or any display of different colors formed by the spectrum of light, or any display of vibrant or colorful things.

When a rainy day clears up and the sun's rays catch on water drops in the atmosphere and form a red, orange, yellow, green, blue, indigo and violet arch, this is an example of a rainbow.

A produce aisle at the grocery store with many different colored fruits and vegetables is an example of a rainbow of colors.

noun
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A multicoloured arch in the sky, produced by prismatic refraction of light within droplets of rain in the air.
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Any prismatic refraction of light showing a spectrum of colours.
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(often used with “of") A wide assortment; a varied multitude.

A rainbow of possibilities.

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An illusion, mirage.

Many electoral promises are rainbows, vanishing soon after poll day.

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(baseball) A curveball, particularly a slow one.
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(poker slang) In Texas hold 'em or Omaha hold 'em, a flop that contains three different suits.
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(chiefly US) Made up of several races or ethnicities, or (more broadly) of several cultural or ideological factions.
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adjective
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(poker, chiefly of a flop) Composed entirely of different suits.
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To pattern with many colours, like a rainbow.
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A member of the Rainbow Guides, a Girl Guide movement for younger girls.
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Origin of rainbow

  • Middle English from Old English rēnboga rēn rain boga bow bow3

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English reinbowe, reinboȝe, from Old English reÄ¡nboga (“rainbow"), from Proto-Germanic *regnabugô (“rainbow"), equivalent to rain +"Ž bow (“arch"). Cognate with West Frisian reinbôge (“rainbow"), Dutch regenboog (“rainbow"), German Regenbogen (“rainbow"), Danish regnbue (“rainbow"), Swedish regnbÃ¥ge (“rainbow"), Icelandic regnbogi (“rainbow").

    From Wiktionary