exogamy
n.
1865, Modern Latin, literally "outside marriage," from exo- + -gamy. Related: Exogamous (1865). Apparently coined by Scottish anthropologist John Ferguson McLennan (1827-1881) in "Primitive Marriage" (see endogamy).
〔蒋〕[exo-外，异，gam婚姻，-y名词后缀] 与外族结婚，异族结婚