Source : Webster's Revised Unabridged Dictionary (1913)

Hallucinatory \Hal*lu"ci*na*to*ry\, a.
   Partaking of, or tending to produce, hallucination.

Source : WordNet®

hallucinatory
     adj : partaking of hallucination; "fleeing in terror from
           hallucinatory wolves"; "the bizarre hallucinatory
           dreams of fever"- Jean Stafford