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

Examples of yellow rain in a Sentence

Recent Examples on the Web

Claim to fame: Put on a yellow rain slicker, climb aboard a rail car and rumble into the heart of a mountain. Scott Craven, USA TODAY, "Arizona road trip: Five must-see small towns," 13 Oct. 2017

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

1981, in the meaning defined above

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The first known use of yellow rain was in 1981

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More Definitions for yellow rain

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

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