It is from the same root as _izlac_, white, with the local ending _tlan_, and means the White or Bright Land.

See the subject discussed in Buschmann, _Ueber die Atzekischen Ortsnamen_.p.612, and recently by Senor Orozco y Berra, in _Anales del Museo Nacional_, Tom.

ii, p.

56.] [Footnote 2: Colhuacan, is a locative form.

It is usually derived from _coloa_, to curve, to round.