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

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First Known Use of yellow rain

1979


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

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