mātūresco — Lewis & Short
mātūresco, rŭi, 3,
cum maturescere frumenta inciperent,Caes. B. G. 6, 29, 4; id. B. C. 3, 49:
fructus maturescens,Plin. 16, 26, 44, § 107.—
libros opinabar nondum satis maturuisse,Quint. Inst. Ep. ad Tryph. 1:
si virtutes ejus maturuissent,had come to maturity, to perfection, Plin. Ep. 5, 9, 5.