sedImentary

[Fr. sédimentaire.] Containing or consisting of sediment; formed by sed i ment. sedimentary rocks, strata, formations, or series, s. pl. Geol.: Rocks, strata, or formations laid down as sediments from water, Aqueous rocks (q.v.). Some are argillaceous, some arenaceous, and some calcareous. [FOSSILIFEROUS.] †sed-i-men-ta-tion, s . [Mod. Lat. sediment a tio.] [SEDIMENT.] Geol.: Deposition of sediment. "Upon this view a formation like the Lias is one formed by a proce of very slow and intermittent sedimentation." Nicholson: Palæont., i. 38.