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1. Anthropology The custom of marrying outside the tribe, family, clan, or other social unit.
2. Biology The fusion of gametes from individuals that are not closely related, as in outbreeding.

ex·og′a·mous (ĕk-sŏg′ə-məs) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.exogamous - characterized by or fit for fertilization by a flower that is not closely related
phytology, botany - the branch of biology that studies plants
autogamic, autogamous - characterized by or fit for autogamy
endogamic, endogamous - characterized by or fit for fertilization by pollen from another flower of the same kind
2.exogamous - pertaining to or characterized by the custom of marrying only outside the limits of a clan or tribe
anthropology - the social science that studies the origins and social relationships of human beings
outbred - bred of parents not closely related; having parents of different classes or tribes
endogamic, endogamous - pertaining to or characterized by the custom of marrying only within the limits of a clan or tribe
References in periodicals archive ?
Masters of Empire is a native-centered history in which McDonnell explains that the patrilineal doodemags of the region framed a flexible kinship system in which both trade and exogamous marriage practices operated to make it possible for indigenous communities to incorporate outsiders into native kinship systems (11, 93).
as body decorations or cultural instruments, they see their social system as organized in the same way as human institutions are (with chiefs, shamans, ceremonies, exogamous moieties, etc.
Among the Minangkabau, both in West Sumatra and Negeri Sembilan, such land is classified as harta pusaka belonging to a village (nagari) that consists of several ideally exogamous matriclans, suku, divided into several matrilineages (kaum) with ceremonially instituted male head called the penghulu or mamak.
Indeed, Cameron reported to Howitt (correspondence, Balranald, 8 April 1882) that the moieties Mukwara and Kilpara formed 'two exogamous and intermarrying classes' of what he called 'a considerable nation' within the central Murray region (Cameron 1885).
By 'non-agnates' she meant persons within 'a large field of recognized kin and affines outside the patrilineal exogamous clan' (ibid.
Exogamous marriage provides one way of smoothing household consumption.
Karl Abraham's 1913 psychoanalytic essay, "Neurotic Exogamy," explicitly situates the incest anxiety as tied to exogamous impulses, and though his argument is presented as universally applicable, he focuses extensively on Jewish male patients.
Besides, both English and Scottish characters demonstrate an interesting blend of fascination and repulsion when discussing these exogamous unions and, even though they strongly advocate against miscegenation, matrimony is so obsessively associated with references to the other nation that we feel we are meant to read the political Union between the lines of the stories of individual unions.
The proportions of exogamous marriages increase over time in cases where the relative size of the group is diminishing as with British Catholics between 1881 and 1941 and decreases as their numbers increase as with the Other Catholics (Table 2 and Figure 2).
Further, the endogamous or exogamous polygamy remains to be one of the most widespread cultural practices among the Sereer Siin community which tradition grants a man a right to have at least three wives, and thus, the first wife is chosen by the man's father or his maternal uncle as the woman is designated under the noun "O Tew O kayenaak"(the shepherd's wife or the girl given to the shepherd as a wife for his breeding activities done in the name of his family members' well-being); she is selected and given to a man as a thankgiving present in regard to the services the man has done in the name of the well-being of all members of the paternal and maternal lineage.
The distribution of various endogamous and exogamous marriages of our 80 individuals for each generation (GSC, GHP and GWP) is given in Table 01.