Definition of sedimentary adjective from the Oxford Advanced American Dictionary

 

sedimentary

 adjective
adjective
NAmE//ˌsɛdəˈmɛntri//
 
, NAmE//ˌsɛdəˈmɛntəri//
 
(geology)
 
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connected with or formed from the sand, stones, mud, etc. that settle at the bottom of lakes, etc. sedimentary rocks
See the Oxford Advanced Learner's Dictionary entry: sedimentary