The Collaborative International Dictionary of English v.0.48:

formalized \formalized\ adj.
   1. concerned with or characterized by rigorous adherence to
      recognized forms, especially in religion or art; using
      formalism; as, highly formalized plays like "Waiting for
      Godot".

   Syn: formalistic.
        [WordNet 1.5]

   2. given formal standing or endorsement; made official or
      legitimate by the observance of proper procedures.
      official (vs. unofficial) --- (having official authority
      or sanction: "official permission"; "an official
      representative")
      [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Formalize \Form"al*ize\ (f[^o]rm"al*[imac]z), v. t. [imp. & p.
   p. Formalized (f[^o]rm"al*[imac]zd); p. pr. & vb. n.
   Formalizing (f[^o]rm"al*[imac]`z[i^]ng).]
   1. To give form, or a certain form, to; to model. [R.]
      [1913 Webster]

   2. To render formal.
      [1913 Webster]

WordNet (r) 3.0 (2006):

formalized
    adj 1: concerned with or characterized by rigorous adherence to
           recognized forms (especially in religion or art); "highly
           formalized plays like `Waiting for Godot'" [syn:
           formalistic, formalized, formalised]
    2: given formal standing or endorsement; made official or
       legitimate by the observance of proper procedures [syn:
       formalized, formalised]