资料来源 : Webster's Revised Unabridged Dictionary (1913)

Informatory \In*form"a*to*ry\, a.
   Full of, or conveying, information; instructive. [R.]
   --London Spectator.

资料来源 : WordNet®

informatory
     adj : providing or conveying information [syn: {informative}]
           [ant: {uninformative}]