Elucidation :: Elucidation (n.) A making clear; the act of elucidating or that which elucidates, as an explanation, an exposition, an illustration; as, one example may serve for further elucidation of the subject..
Elucidative :: Elucidative (a.) Making clear; tending to elucidate; as, an elucidative note..
Elucidator :: Elucidator (n.) One who explains or elucidates; an expositor.
Elucidatory :: Elucidatory (a.) Tending to elucidate; elucidative.