volcanic dust

noun

Definition of volcanic dust

: fine particles of rock powder that are blown out from a volcano and that may remain suspended in the atmosphere for long periods producing red sunsets and climatic modifications thousands of miles away

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“Volcanic dust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanic%20dust. Accessed 21 Oct. 2020.

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