billow cloud

noun

: a long narrow cloud or usually a series of such clouds roughly parallel to each other caused by the flow of one layer of air over another producing waves at their interface the relatively cold crests of which are cloud-capped and their relatively warm troughs clear when the humidity is just right

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Dictionary Entries Near billow cloud

Cite this Entry

“Billow cloud.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/billow%20cloud. Accessed 27 Feb. 2024.

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