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

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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Cite this Entry

“Yellow rain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/yellow%20rain. Accessed 5 Aug. 2020.

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More Definitions for yellow rain

yellow rain

noun
\ -ˈrān How to pronounce yellow rain (audio) \

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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