developyoudaoicibaDictYouDict[develop 词源字典]
develop: [17] The history of develop and its close relative envelop is hazy. English acquired it from développer, the modern French descendant of Old French desveloper. This was a compound verb formed from the prefix des- ‘un-’ and voloper ‘wrap’. But where did voloper come from? Some have proposed a hypothetical Celtic base *vol- ‘roll’, while others have pointed to similarities, formal and semantic, with Italian viluppo ‘bundle’ and viluppare ‘wrap’, which come from an assumed late Latin *faluppa ‘husk’. Beyond that, however, the trail has gone cold.
=> envelop[develop etymology, develop origin, 英语词源]
develop (v.)youdaoicibaDictYouDict
1650s, "unroll, unfold," from French développer, replacing English disvelop (1590s, from Middle French desveloper), both from Old French desveloper "unwrap, unfurl, unveil; reveal the meaning of, explain," from des- "undo" + veloper "wrap up," which is of uncertain origin, possibly Celtic or Germanic. Modern figurative use is 18c. The photographic sense is from 1845; the real estate sense is from 1890.