hierarchy
 
 
 
  1. In general, the arrangement of parent-child relationships for all connected nodes that make up an object (also known as object hierarchy) or a scene (also known as DAG or scene hierarchy).
  2. In animation, a hierarchy of joint chains.

    Also known as skeleton hierarchy.

  3. In subdivision modeling, the number of levels in a subdivision surface.

    In other software packages, known as mesh smooth.