1630-40; < Frenchprécosité, equivalent to précose (< Latinpraecoci-, stem of praecox early ripening, adj. derivative of praecoquere to bake or ripen early; see pre-, cook1) + -ité-ity
Examples from the web for precocity
At the outset it was the sheer marvel of his precocity.
Before that, his only hint of precocity had been his authoritative war with jigsaw puzzles.
Since then, in a trance of evergreen precocity, he has been educating himself: doing his homework and writing his essays.
Word Origin and History for precocity
n.
1630s, from French précocité (17c.), from précoce "precicious," from Latin praecocem (nom. praecox); see precocious.