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sedimentary (adj.)

1764, from sediment + -ary. Sedimentary rock attested by 1830 (in Lyell). Sedimental (adj.) is recorded from c. 1600.

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Definitions of sedimentary

sedimentary (adj.)
resembling or containing or formed by the accumulation of sediment;
sedimentary deposits
sedimentary (adj.)
produced by the action of water;
Synonyms: aqueous
From wordnet.princeton.edu