sedimentary
adjective
sed·i·men·ta·ry
ˌse-də-ˈmen-tə-rē 
-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
The world produces so much plastic (more than 400 million metric tons a year, according to one estimate—roughly the combined weight of every human alive) that degraded nubbins coat the planet, detectable in the sedimentary depths of the Mariana Trench and the icy heights of Mount Everest.
—
Annie Lowrey, The Atlantic, 7 July 2025
Both current Mars rover missions – Curiosity climbing Mount Sharp in Gale crater and Perseverance exploring the river delta in Jezero Crater – have discovered carbonates, in the sedimentary rock that form Mount Sharp, and stretching tens of kilometers along the rim of Jezero.
—Keith Cooper, Space.com, 2 July 2025
These cements are the same materials that bind together natural sedimentary rocks, but the chemical reactions cause the process to happen much faster.
—David Bressan, Forbes.com, 30 May 2025
Ocean strontium values change over time, which makes measuring the levels of the chemical element a unique global system for determining the age of similar coastal sedimentary rock deposits worldwide.
—Bruce J. MacFadden, The Conversation, 3 Feb. 2025
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Annie Lowrey, The Atlantic, 7 July 2025
Both current Mars rover missions – Curiosity climbing Mount Sharp in Gale crater and Perseverance exploring the river delta in Jezero Crater – have discovered carbonates, in the sedimentary rock that form Mount Sharp, and stretching tens of kilometers along the rim of Jezero.
—Keith Cooper, Space.com, 2 July 2025
These cements are the same materials that bind together natural sedimentary rocks, but the chemical reactions cause the process to happen much faster.
—David Bressan, Forbes.com, 30 May 2025
Ocean strontium values change over time, which makes measuring the levels of the chemical element a unique global system for determining the age of similar coastal sedimentary rock deposits worldwide.
—Bruce J. MacFadden, The Conversation, 3 Feb. 2025
See All Example Sentences for sedimentary
Cite this Entry
“Sedimentary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sedimentary. Accessed 20 Jul. 2025.
Copy CitationKids Definition
sedimentary
adjective
sed·i·men·ta·ry
ˌsed-ə-ˈment-ə-rē
-ˈmen-trē
1
: of, relating to, or containing sediment
2
: formed by or from sediment
sedimentary rock
compare igneous, metamorphic
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