/dis awr"ee ent', -ohr"-/ , v.t.
1. to cause to lose one's way: The strange streets disoriented him.
2. to confuse by removing or obscuring something that has guided a person, group, or culture, as customs, moral standards, etc.: Society has been disoriented by changing values.
3. Psychiatry. to cause to lose perception of time, place, or one's personal identity.
[ 1645-55; désorienter, equiv. to dés- DIS- 1 + orienter to ORIENT ]