nurbs

from The Free On-line Dictionary of Computing (8 July 2008)

Non-Uniform Rational B Spline
nurbs

   <graphics, mathematics> (nurbs) A common term in Mechanical
   {CAD}.  The NURBS has excellent continuity characteristics
   which make it useful for creating accurate models in 3D
   geometry generation and computer modelling.

   [What is a nurbs?  an rbs?  a bs?  a s?]

   (1996-08-27)