orographic precipitation

orographic precipitation

[¦ȯr·ə¦graf·ik prə‚sip·ə′tā·shən] (meteorology) Precipitation which results from the lifting of moist air over an orographic barrier such as a mountain range; strictly, the amount so designated should not include that part of the precipitation which would be expected from the dynamics of the associated weather disturbance, if the disturbance were over flat terrain.