WordWeb Online

1. A state of prolonged absorption in a single idea (as in mental depression, trance, hypnosis).
   "Ribot in fact made a qualification to his theory, which showed his unease about maintaining that attention was a state of monoideism, and this qualification is certainly in the direction favouring the position I have suggested."

Derived forms: monoideisms

Type of: mental condition, mental state, psychological condition, psychological state