'Intermarriage' definitions:

Definition of 'intermarriage'

From: WordNet
noun
Marriage to a person belonging to a tribe or group other than your own as required by custom or law [syn: exogamy, intermarriage] [ant: endogamy, inmarriage, intermarriage]
noun
Marriage within one's own tribe or group as required by custom or law [syn: endogamy, intermarriage, inmarriage] [ant: exogamy, intermarriage]

Definition of 'Intermarriage'

From: GCIDE
  • Intermarriage \In`ter*mar"riage\, n. Connection by marriage; reciprocal marriage; giving and taking in marriage, as between two families, tribes, races, castes, or nations. [1913 Webster]

Synonyms of 'intermarriage'

From: Moby Thesaurus