flow·​stone ˈflō-ˌstōn How to pronounce flowstone (audio)
: calcite deposited by a thin sheet of flowing water usually along the walls or floor of a cave

Examples of flowstone in a Sentence

Recent Examples on the Web Uranium-thorium dating said the flowstone couldn’t be any younger than 114,000 years. Jennifer Ouellette, Ars Technica, 21 June 2023 Here, too, flowing water had deposited a flowstone over the layer of sediment in which these shells were found. Jennifer Ouellette, Ars Technica, 21 June 2023 One of the largest flowstone formations looks similar to a frozen waterfall and is dubbed Frozen Niagra. Monica Cull, Discover Magazine, 18 Apr. 2022 However, rocks from different ages have fallen into the cave, along with water and flowstone deposits that mix younger sediment with older sediment. Monica Cull, Discover Magazine, 27 June 2022 In a cave, mineral-rich water drips over the walls, eventually depositing stalactites, stalagmites, and the sheet-like formations called flowstone. Sophie Bushwick, Discover Magazine, 21 June 2012 The researchers, including experts from Johannesburg and France, examined radioactive decay in rocks buried at the same time as the fossils, whereas earlier estimates were based on calcite flowstone deposits. Ellen Francis, Washington Post, 29 June 2022 And younger flowstone can sometimes be found mixed in with old sediment. Ashley Strickland, CNN, 28 June 2022 From there a walking path goes through six geological strata, crosses a bridge over a chasm built by Russian prisoners during World War I and continues past underground clifftops and gorges, spaghetti-thin stalactites and flowstone curtains. John Malathronas, CNN, 3 Dec. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flowstone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of flowstone was in 1925

Dictionary Entries Near flowstone

Cite this Entry

“Flowstone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flowstone. Accessed 24 Jul. 2024.

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