[reyn-boh] /ˈreɪnˌboʊ/

a bow or arc of prismatic colors appearing in the heavens opposite the sun and caused by the refraction and reflection of the sun’s rays in drops of rain.
Compare , .
a similar bow of colors, especially one appearing in the spray of a waterfall or fountain.
any brightly multicolored arrangement or display.
a wide variety or range; gamut.
a visionary goal:
He pursued the rainbow of a singing career for years before becoming a success.
having a diverse membership; including representatives from multiple racial and ethnic groups:
a rainbow coalition of minority groups.
a bow-shaped display in the sky of the colours of the spectrum, caused by the refraction and reflection of the sun’s rays through rain or mist

an illusory hope: to chase rainbows
(modifier) of or relating to a political grouping together by several minorities, esp of different races: the rainbow coalition
a member of the Rainbow Guides, the youngest group of girls (aged 5-7 years) in The Guide Association

Old English renboga; see rain (n.) + bow (n.). Common Germanic compound (cf. Old Frisian reinboga, Old Norse regnbogi, Swedish regenbåge, Dutch regenboog, German Regenbogen). Rainbow trout (1876, American English) so called for its resplendent colors. Old English also had scurboga “shower-bow.”

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.

The colored arch in the sky that is often seen after a rain. The rainbow is formed when water droplets in the air cause the diffraction of sunlight.

Note: The colors of the rainbow are violet, indigo, blue, green, yellow, orange, and red.

caused by the reflection and refraction of the rays of the sun shining on falling rain. It was appointed as a witness of the divine faithfulness (Gen. 9:12-17). It existed indeed before, but it was then constituted as a sign of the covenant. Others, however (as Delitzsch, Commentary on Pentateuch), think that it “appeared then for the first time in the vault and clouds of heaven.” It is argued by those holding this opinion that the atmosphere was differently constituted before the Flood. It is referred to three other times in Scripture (Ezek. 1:27, 28; Rev. 4:1-3; 10:1).


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