c. 1600, from French succulent (16c.), from Latin succulentus "having juice, juicy," from succus "juice, sap;" related to sugere "to suck," and possibly cognate with Old English socian "to soak," sucan "to suck" (see sup (v.2)). The noun meaning "plant with juicy tissues" is from 1825.[succulent etymology, succulent origin, 英语词源]