Source : WordNet®

exogamic
     adj 1: characterized by or fit for fertilization by a flower that
            is not closely related [syn: {exogamous}] [ant: {autogamous},
             {endogamous}]
     2: pertaining to or characterized by the custom of marrying
        only outside the limits of a clan or tribe [syn: {exogamous}]
        [ant: {endogamous}]