yellow rain

noun

Definition of yellow rain

: a yellow substance that has occurred in southeastern Asia as a mist or as spots on rocks and vegetation and has been held to be a biological warfare agent used in the Vietnam War but appears upon scientific examination to be identical to pollen-laden bee feces

Recent Examples of yellow rain from the Web

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

First Known Use of yellow rain

1979

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

yellow rain

noun \ -ˈrān \

medical Definition of yellow rain

: a yellow substance that has occurred in southeastern Asia as a mist or as spots on rocks and vegetation and has been held to be a biological warfare agent used in the Vietnam War but appears upon scientific examination to be identical to the pollen-laden feces of bees

Learn More about yellow rain


Seen and Heard

What made you want to look up yellow rain? 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

talkative or wordy

Get Word of the Day daily email!

Test Your Vocabulary

Words Used by Nabokov Quiz

  • image1676440788
  • Choose the best definition or synonym for the word in bold: "There are some eructations that sound like cheers—at least, mine did." Lolita
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Syn City

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!