a massive structure typically having a square ground plan, smooth or stepped outside walls in the form of four triangles that meet in a point at the top, and inner burial chambers, esp any of a number of such structures found in Egypt and enclosing the burial chambers of the pharaohs
any structure or object of a similar form
a nonphysical structure or system, such as a social or organizational hierarchy, conceived of as having the form of a triangle or pyramid with a broad supporting base and narrowing gradually to an apex
the forgotten man at the bottom of the economic pyramid — Franklin D Roosevelt
a business organization that consists of a number of holding companies and that is so structured that the company at the top of the hierarchy controls the entire group while having only a relatively small proportion of the total capital of the group
in geometry, a polyhedron having a base that is a polygon and other faces that are triangles with a common vertex
an anatomical structure resembling a pyramid, e.g.:
any of the conical masses that project from the medulla (central portion) of the kidney into the kidney pelvis
either of two large bundles of nerve fibres from the cerebrum (outer portion of the forebrain) that reach the medulla oblongata (rear portion) and are continuous with the pyramidal tracts of the spinal cord
a crystal form having nonparallel faces that meet at a point
(in pl) a game similar to billiards, played with 15 red balls and a cue ball