The Collaborative International Dictionary of English v.0.48:

Homolographic \Hom`o*lo*graph"ic\, a. [Homo- + Gr. "o`los whole
   + -graph + -ic; but cf. F. homalographique, Gr. ? even,
   level.]
   Preserving the mutual relations of parts, especially as to
   size and form; maintaining relative proportion.
   [1913 Webster]

   Homolographic projection, a method of constructing
      geographical charts or maps, so that the surfaces, as
      delineated on a plane, have the same relative size as the
      real surfaces; that is, so that the relative actual areas
      of the different countries are accurately represented by
      the corresponding portions of the map.
      [1913 Webster]