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

Most of the islands are composed of sedimentary rock, though some are volcanic in origin. — Ethan Teekah, Encyclopedia Britannica, 17 Mar. 2026

Group of Tourists enjoying the beach vacation on the sandy beaches and white sedimentary rocks and cliff. — Emily Price, Forbes.com, 14 Mar. 2026

Also known as natural stone, flagstone is a sedimentary rock that can be sliced into a variety of pieces and layers. — Farima Ferguson, The Spruce, 5 May 2026

The exhibition features ceramics made of clay and soft sedimentary rock by contemporary artist Echo Morgan. — Alyson Rodriguez, Dallas Morning News, 31 Mar. 2026

Word History

First Known Use

1830, in the meaning defined at sense 1

Rhymes for sedimentary

• alimentary
• complimentary
• documentary
• parliamentary
• rudimentary
• supplementary
• testamentary
• integumentary
• uncomplimentary
• unparliamentary
• interparliamentary
• metasedimentary

Kids 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