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1.
Marital - Marriage between people from different backgrounds - especially from foreign lands (or in fiction, from alien worlds); a more extreme/diverse form of heterogamy.

Botany - Floral fertilisation by genetically different pollen.

Origin: From Greek "xenos" (stranger) and "gamos" (marriage).
The United Nations finally legalised xenogamy, once they realised that the alien race wanted to coexist in peace.
by Greek_Latin_King June 21, 2011

Words related to xenogamy

nuptials
 
2.
marriage with a foreigner.
Is xenogamy popular in your country?
by uttam maharjan September 22, 2010