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pyr·a·mid
n 1 : a polyhedron having for its base a polygon and for faces triangles with a common vertex 2 : an anatomical structure resembling a pyramid: as a : RENAL PYRAMID b : either of two large bundles of motor fibers from the cerebral cortex that reach the medulla oblongata and are continuous with the corticospinal tracts of the spinal cord c : a conical projection making up the central part of the inferior vermis of the cerebellum .
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Similar sounding terms: per·me·ate premed pri·mate pro·mote
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