sedimentary

adjective

sed·​i·​men·​ta·​ry ˌse-də-ˈmen-tə-rē How to pronounce sedimentary (audio)
-ˈmen-trē
1
: of, relating to, or containing sediment
sedimentary deposits
2
: formed by or from deposits of sediment
sedimentary rock

Examples of sedimentary in a Sentence

Recent Examples on the Web
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The Wallace Bowl complex is built with flagstone, a sedimentary rock usually made of sandstone, and the seats are wooden, Andrew said. Phil Rockrohr, Chicago Tribune, 5 June 2025 Limestone was a sedimentary rock, composed of the calcium remains of mollusks, corals, and microscopic creatures that had lived and died in this formerly shallow sea. Anelise Chen june 3, Literary Hub, 3 June 2025 The slag deposits have formed cliffs of waste material that are being eroded by coastal waves and tides forming sedimentary rocks — resembling the natural rock cycle. David Bressan, Forbes.com, 30 May 2025 Arsenic-bearing aquifers are common in some sedimentary rocks. David Bressan, Forbes.com, 28 May 2025 See All Example Sentences for sedimentary

Word History

First Known Use

1830, in the meaning defined at sense 1

Time Traveler
The first known use of sedimentary was in 1830

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Cite this Entry

“Sedimentary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sedimentary. Accessed 17 Jun. 2025.

Kids Definition

sedimentary

adjective
sed·​i·​men·​ta·​ry ˌsed-ə-ˈment-ə-rē How to pronounce sedimentary (audio)
-ˈmen-trē
1
: of, relating to, or containing sediment
2
: formed by or from sediment
sedimentary rock
compare igneous, metamorphic

More from Merriam-Webster on sedimentary

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