mollescentyoudaoicibaDictYouDict[mollescent 词源字典]
"That has become, or tends to become, soft", Early 19th cent.; earliest use found in Samuel Cooper (1780–1848), surgeon and writer. From classical Latin mollēscent-, mollēscēns, present participle of mollēscere to become soft from mollis soft + -ēscere.[mollescent etymology, mollescent origin, 英语词源]