\Con*ven"tion*al*izw\, v. t. [imp. & p. p.
{Conventionalized}; p. pr. & vb. n. {Conventionalizing}.]
1. To make conventional; to bring under the influence of, or
   cause to conform to, conventional rules; to establish by
   usage.

2. (Fine Arts)
   (a) To represent by selecting the important features and
       those which are expressible in the medium employed,
       and omitting the others.
   (b) To represent according to an established principle,
       whether religious or traditional, or based upon
       certain artistic rules of supposed importance.