propagate (v.)youdaoicibaDictYouDict[propagate 词源字典]
1560s, "to cause to multiply," from Latin propagatus, past participle of propagare "to set forward, extend, procreate" (see propagation). Intransitive sense "reproduce one's kind" is from c. 1600. Related: Propagated; propagating.[propagate etymology, propagate origin, 英语词源]