HALLUCINATIONS
  1. imagined realities with which nobody else agrees. (HFP, p. 41)
  2. we call a mental image picture an "hallucination" or more properly an automaticity (something uncontrolled) when it is created by another and seen by self. (FOT, p. 57)
  3. things seen that aren't there. (7203C30SO)
  4. a person imagining and not knowing he was imagining would be a person who was hallucinating. (5203CM04B)


Technical Dictionary