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| 1. | (in classical architecture) a low gable, typically triangular with a horizontal cornice and raking cornices, surmounting a colonnade, an end wall, or a major division of a façade. |
| 2. | any imitation of this, often fancifully treated, used to crown an opening, a monument, etc., or to form part of a decorative scheme. |
| 3. | Geology. a gently sloping rock surface at the foot of a steep slope, as of a mountain, usually thinly covered with alluvium. |
| pediment (pěd'ə-mənt) Pronunciation Key
A broad, gently sloping rock surface at the base of a steeper slope such as a mountain, often covered with alluvium. Pediments are formed through the exposure of bedrock by erosional processes, such as the flow of water. Pediments are usually found in arid regions where there is little vegetation to hold the overlying soil. |