The Collaborative International Dictionary of English v.0.48:
Elucidative \E*lu"ci*da`tive\, a. Making clear; tending to elucidate; as, an elucidative note. [1913 Webster]WordNet (r) 3.0 (2006):
elucidative adj 1: that makes clear; "a clarifying example" [syn: clarifying, elucidative]