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Grit |
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grit
1. any coarse sandstone that can be used as a grindstone or millstone 2. Engineering an arbitrary measure of the size of abrasive particles used in a grinding wheel or other abrasive process grit [grit] (geology) A hard, sharp granule, as of sand. A coarse sand. (materials) An abrasive material composed of angular grains. (petrology) A sandstone composed of angular grains of different sizes. grit A granular abrasive material (e.g., consisting of particles of aluminum oxide or silicon carbide) which is used to coat cloth, paper, or wheels for sanding, grinding, or polishing; also used to provide a nonslip finish to a surface. Grit cemented gravel with the texture of sandstone. Grit is widely distributed among sedimentary formations. Its presence is evidence of the intensive erosion of more ancient layers, and it indicates the proximity of a shoal, dry land, or rises (positive forms of basin bottom relief). Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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