DELUSION
  1. a belief in something which is contrary to fact or reality resulting from deception, misconception or misassignment. (HCOB 11 May 65)
  2. what one person thinks is, but others don't necessarily. (SH Spec 72, 6607C28)
  3. the postulation by the imagination of occurrences in areas of plus or minus randomity. (Scn 0-8, p. 90)
  4. delusion is imagination out of control. (Scn Jollr, Iss. 14-G)