illuminatory

From illuminate + -ory.

illuminatory (comparative more illuminatory, superlative most illuminatory)

1. Increasing informative qualities; explanatory.
   • 1991, Harry Smart, Criticism and Public Rationality: Professional Rigidity and the Search for Caring Government:

     The problem of a non-learning authority remains apparently untouched by all the self-critical and self-analytical awareness which is evidenced. This, of course, does not deny the illuminatory potential of structuralist models of society in general, but this one does not work here.