elucidatory

From elucidate +‎ -ory.

elucidatory (comparative more elucidatory, superlative most elucidatory)

1. Serving to elucidate.
   • 2018, Clarence Green, James Lambert, “Position vectors, homologous chromosomes and gamma rays: Promoting disciplinary literacy through Secondary Phrase Lists”, in English for Specific Purposes, →DOI, page 7:

     Numerous compound nouns of category (b) are perfectly valid lexemes, but are not considered dictionary material since their definition (e.g., ‘a door of a cupboard’) is no more elucidatory than the original compound itself (‘cupboard door’).