The Collaborative International Dictionary of English v.0.48:

Barycentric \Bar`y*cen"tric\, a. [Gr. bary`s heavy + ke`ntron
   center.]
   Of or pertaining to the center of gravity. See Barycentric
   calculus, under Calculus.
   [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

barycentric

    Centre of gravity, mean.

   (2007-07-10)