HyperDic: rottenstone

English > 1 sense of the word rottenstone:
NOUNsubstancerottenstone, tripolia weathered and decomposed siliceous limestone
English > rottenstone: 1 sense > noun 1, substance
MeaningA weathered and decomposed siliceous limestone; in powdered form it is used in polishing.
Synonymtripoli
BroaderlimestoneA sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

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