preoperational adjective. [,pri:ɒpǝ'reɪʃ(ǝ)n(ǝ)l] M20.
[from PRE- 2 + OPERATIONAL.]
Psychology. Pertaining to or designating a stage of a child's development (between about two and seven years) in which it is regarded as able to understand or foresee the effects of its actions only in an unsystematic and sometimes contradictory way.

[TahlilGaran] English Dictionary ▲