Source : Webster's Revised Unabridged Dictionary (1913)

Territorialize \Ter`ri*to"ri*al*ize\, v. t. [imp. & p. p.
   {Territorialized}; p. pr. & vb. n. {Territorializing}.]
   1. To enlarge by extension of territory.

   2. To reduce to the condition of a territory.