1

rainbow

noun rain·bow \ -ˌbō \

Definition of rainbow

1 :an arc or circle that exhibits in concentric bands the colors of the spectrum and that is formed opposite the sun by the refraction and reflection of the sun's rays in raindrops, spray, or mist
2 a :a multicolored array
b :a wide assortment or range
  • a rainbow of flavors
3
[from the impossibility of reaching the rainbow, at whose foot a pot of gold is said to be buried]
:an illusory goal or hope

rainbowlike

adjective

Recent Examples of rainbow from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rainbow.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rainbow

before 12th century

Other Climate/Meteorology Terms


2

rainbow

adjective

Definition of rainbow

1 :having many colors
2 :of, relating to, or being people of different races or cultural backgrounds
  • a rainbow coalition

Examples of rainbow in a Sentence

  1. the rainbow costumes worn by mummers at Mardi Gras

Recent Examples of rainbow from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rainbow.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rainbow

1637


RAINBOW Defined for English Language Learners

rainbow

noun

Definition of rainbow for English Language Learners

  • : a curved line of different colors that sometimes appears in the sky when the sun shines through rain


rainbow

adjective

Definition of rainbow for English Language Learners

  • : of, relating to, or including people of different races, cultures, etc.


RAINBOW Defined for Kids

rainbow

noun rain·bow \ ˈrān-ˌbō \

Definition of rainbow for Students

:an arc of colors that appears in the sky opposite the sun and is caused by the sun shining through rain, mist, or spray

Medical Dictionary

rainbow

noun rain·bow \ ˈrān-ˌbō \

medical Definition of rainbow

slang
:a combination of the sodium derivatives of amobarbital and secobarbital in a blue and red capsule


Seen and Heard

What made you want to look up rainbow? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

spoken rather than written

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one-green-toy-robot-amidst-many-red-toy-robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!