DictionaryrainbowArc of colors
noun / adjective

rainbow

RAYN-boh/ˈreɪnbəʊ/

A curved display of colors produced by sunlight in water droplets.

A bright rainbow stretches across the sky after the storm.

Natural rainbow arches across clearing sky.
Etymology

The pieces name an arch associated with rain: boga could mean anything bent or arched, including an archery bow. The colored arc is thus described by its curved shape.

In context

Veritasium0:32
For example, if raindrops spread white light into colors like a prism, then why do you never see a rainbow when looking in the direction of the sun?
What They (Probably) Don't Teach You About Rainbows At School

More examples

  • Sunlight creates tiny rainbows in the fountain's mist.
  • She wears a rainbow scarf with stripes of many colors.
  • A rainbow coalition of local groups supports the new library.

Forms

rainbow · rainbows