Definition of limestone Limestone

/lajˈmstowˌn/ - [laymstown] - lime•stone

We found 7 definitions of limestone from 6 different sources.

What does limestone mean?

Noun Plural: limestones
limestone - a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
		rock, stone pitching dangerously to one side
		sedimentary rock rock formed from consolidated clay sediments
		atomic number 20, calcium, ca 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, carbon, c a copy made with carbon paper
		calcite a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone

= synonym
= antonym
= related word

limestone (Noun)
An abundant rock of marine and fresh-water sediments; primarily composed of calcite CaCO₃; it occurs in a variety of forms, both crystalline and amorphous.
limestone (Adjective)
Made of or with limestone.

limestone (n.)
A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.

limestone
A sedimentary rock consisting chiefly of calcium carbonate, primarily in the form of the mineral calcite and with or without magnesium carbonate.

Limestone is a chemical sedimentary rock, made up mostly of the mineral calcite (calcium carbonate: CaCO3). When it is heated at a very high temperature, it becomes the metamorphic rock, marble.

Uses.

Limestones are easy to work with, so they are used for building architecture. Limestone became most popular in the 19th and 20th centuries for building things such as churches, banks and houses. It is used to make glass and cement. It can be used like chalk, as it is mostly calcium, so you can actually draw with the stone. People use it as decorations sometimes, as pebbles.