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Sandro Botticelli
sandwich board
sandwich coin
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Sandstone definitions

Webster's 1828 Dictionary

SAND'STONE, n. [sand and stone.] Sandstone is, in most cases, composed chiefly of grains of quartz united by a cement, calcarious, marly, argillaceous, or even silicious. The texture of some kinds is loose, of others close; the fracture is granular or earthy.
Sandstones usually consist of the materials of older rocks, as granite, broken up and comminuted, and afterwards deposited again.
SAND'-WORT, n. A plant.

WordNet (r) 3.0 (2005)

1: a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)

Merriam Webster's

noun Date: 1609 a sedimentary rock consisting of usually quartz sand united by some cement (as silica or calcium carbonate)

Britannica Concise

Sedimentary rock formed from sand-sized grains (0.0025-0.08 in., or 0.06-2 mm, in diameter). The spaces between grains may be empty or filled with either a chemical cement of silica or calcium carbonate or a fine-grained matrix of silt and clay particles. The principal mineral constituents of the grain framework are quartz, feldspar, and rock fragments. Sandstones are quarried for use as building stone. Because of their abundance, diversity, and mineralogy, sandstones are also important to geologists as indicators of erosional and depositional processes. See also graywacke.

Oxford Reference Dictionary

n. 1 any clastic rock containing particles visible to the naked eye. 2 a sedimentary rock of consolidated sand commonly red, yellow, brown, grey, or white.

Webster's 1913 Dictionary

Sandstone Sand"stone`, n. A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand. Note: Different names are applied to the various kinds of sandstone according to their composition; as, granitic, argillaceous, micaceous, etc. Flexible sandstone (Min.), the finer-grained variety of itacolumite, which on account of the scales of mica in the lamination is quite flexible. Red sandstone, a name given to two extensive series of British rocks in which red sandstones predominate, one below, and the other above, the coal measures. These were formerly known as the Old and the New Red Sandstone respectively, and the former name is still retained for the group preceding the Coal and referred to the Devonian age, but the term New Red Sandstone is now little used, some of the strata being regarded as Permian and the remained as Triassic. See the Chart of Geology.

Collin's Cobuild Dictionary

(sandstones) Sandstone is a type of rock which contains a lot of sand. It is often used for building houses and walls. ...sandstone cliffs. N-MASS

Moby Thesaurus

aa, abyssal rock, basalt, bedrock, block lava, brash, breccia, conglomerate, crag, druid stone, festooned pahoehoe, gneiss, granite, igneous rock, lava, limestone, living rock, magma, mantlerock, metamorphic rock, monolith, pahoehoe, pillow lava, porphyry, pudding stone, regolith, rock, ropy lava, rubble, rubblestone, sarsen, schist, scoria, scree, sedimentary rock, shelly pahoehoe, stone, talus, tufa, tuff

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