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 site's paleontological importance is underscored by the presence of fossils found in the sedimentary layers, including ammonites, marine reptiles and microorganisms, all of which provide critical insight into life before and after the extinction event. Jonathan Granoff, Newsweek, 29 Jan. 2025 This site, which falls part of a rich sedimentary layer from the Early Cretaceous period, has long been a hotspot for dinosaur fossils. Scott Travers, Forbes, 7 Jan. 2025 The government analysis notes that block-cave mining would break through a layer of sedimentary rock called the Whitetail Conglomerate that isolates a surface aquifer called the Apache Leap Tuff Aquifer from deeper groundwater. Brandon Loomis, The Arizona Republic, 19 Dec. 2024 The site is a fossil hotspot because uplifting rock exposes old sedimentary layers at the surface, allowing researchers to access the bones of ancient humans and other animals. Evan Bush, NBC News, 28 Nov. 2024 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

Dictionary Entries Near sedimentary

Cite this Entry

“Sedimentary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sedimentary. Accessed 21 Feb. 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

Last Updated: - Updated example sentences
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