Wordnet 3.0
ADJECTIVE (1)
1. 
 representing or constituting an original type after which other similar things are patterned; 
- Example: "archetypal patterns"- Example: "she was the prototypal student activist"[syn: archetypal, archetypical, prototypal, prototypic, prototypical]
WordNet (r) 3.0 (2006):
prototypic
    adj 1: representing or constituting an original type after which
           other similar things are patterned; "archetypal
           patterns"; "she was the prototypal student activist"
           [syn: archetypal, archetypical, prototypal,
           prototypic, prototypical]