maturescent (adj.)youdaoicibaDictYouDict[maturescent 词源字典]
1727, "grown ripe," from Latin maturescentem (nominative maturescens), present participle of maturescere "be ripe, ripen," from maturus "ripe" (see mature (v.)) + inchoative suffix -escere.[maturescent etymology, maturescent origin, 英语词源]