appearing or developing early; "precocious flowers appear before the leaves as in some species of magnolias"
characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude); "a precocious child"; "a precocious achievement"
an additional ingredient that is added by mixing with the base; "the growing medium should be equal parts of sand and loam with an admixture of peat moss and cow manure"; "a large intermixture of sand"
the state of impairing the quality or reducing the value of something