annexation
n.
1620s, from Medieval Latin annexiationem (nominative annexatio) "action of annexing," noun of action from past participle stem of annexare (see annex). The Middle English noun form was annexion "union; joining; territory acquired" (mid-15c.).
〔蒋〕[nect，mex结，系，-ation名词后缀] 合并，并吞，附加，并吞物，附加物