Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

acid rain

noun

Simple Definition of acid rain

  • : rain that contains dangerous chemicals because of smoke from cars and factories

Source: Merriam-Webster's Learner's Dictionary

Full Definition of acid rain

  1. :  acid precipitation in the form of rain

Examples of acid rain in a sentence

  1. trees damaged by acid rain



1845

First Known Use of acid rain

1845


Medical Dictionary

acid rain

noun

Medical Definition of acid rain

  1. :  acid precipitation especially in the form of rain




Learn More about acid rain


Seen and Heard

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

WORD OF THE DAY

of or relating to the heavens

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

dog-eating-apple

Which is a synonym of asperse?

beat defame divulge placate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ