[ noun ] intelligence achieved far ahead of normal developmental schedules <noun.cognition>
Precociousness \Pre*co"cious*ness\, Precocity \Pre*coc"i*ty\, n. [Cf. F. pr['e]cocit['e].] The quality or state of being precocious; untimely ripeness; premature development, especially of the mental powers; forwardness.
Saucy precociousness in learning. --Bp. Mannyngham.
That precocity which sometimes distinguishes uncommon genius. --Wirt.