- Stones are hard pieces of mineral or earth.
An example of stones are kidney stones, containing calcium with either oxalate or phosphate.
- Stones are pieces of rock that have been smoothed.
An example of stones are smoothed rocks in a riverbed.
A collection of kidney stones.
dolmen a construction consisting of two or more upright stones with a third on top, regarded by archaeologists as an ancient tomb or monument. eolith a stone tool, as one used in the early Stone Age. —eolithic, adj. lapidification the process of turning to stone. Also called petrifaction, petrification. lithoidolatry the worship of rocks and stones. — lithoidolater, n. — lithoidolatrous, adj. lithomancy a form of divination involving rocks or stones. macrolith a tool made of stone, usually about 12 inches long. megalith a stone of great size, as found in the monuments and constructions of ancient, particularly prehistoric, peoples. — megalithic, adj. menhir an upright, monumental stone, as a cromlech, standing by itself or in a group or circle with others. monolith a single large block of stone used in architecture or sculpture. —monolithic, adj. neolith a stone artifact from the Neolithic (Stone) Age. otolith a stonelike concretion in the inner ear of some vertebrates, as the whale. pessomancy a form of divination involving pebbles. Also called psephology. petrification, petrifaction lapidification. petroglyphy the study of drawings or carvings made on rocks by a member of a prehistoric or primitive people. Also called petrography. —petroglyph, n. —petroglyphic, adj. sabulosity the quality or condition of being sandy or gritty, as a stone. —sab-ulous, adj.