limestone

Noun
  1. A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals (synset 114960364)
    is a type of:
    • rock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust
    • sedimentary rock - rock formed from consolidated clay sediments
    subtypes: rottenstone, tripoli - a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
    substance holonym:
    • atomic number 20, ca, calcium - a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
    • atomic number 6, c, carbon - an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
    • calcite - a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone

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