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| Semi-vitreous tile
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Tile with water absorption of more than 3.0 percent, but not more than 7.0 percent. |
| Semiannual
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Twice yearly. |
| Semianthracite
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Coal which burns cleanly and is softer and easier to ignite than anthracite, which is used for heating. |
| Semicircle
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Half of a circle. |
| Semicircular arch
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Also called Gothic, Tudor, parabolic, or major arches, they are arches which have a span of more than six feet with a rise-to-span ratio in excess of 0.15, having a load capacity of 1,000 pounds per foot. |
| Semiconductor
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Any material that has a limited capacity for conducting an electric current. Certain semiconductors, including silicon, gallium arsenide, copper indium diselenide, and cadmium telluride, are uniquely suited to the photovoltaic conversion process. |
| Semigloss
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Paint or varnish which has a sheen which is between flat and gloss. |
| Semirigid continuous base
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Asphalt which is firm but not rigid like concrete and is used on roadways because it can be maintained better when there is some ground movement. |
| Semitransparent
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A degree of hiding greater than transparent but less than opaque. |
| Senior mortgage
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Primary mortgage on a property, which takes priority over any other liens and is satisfied before any secondary liens. |
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