Adelphogamy

Adelphogamy is a form of sexual partnership between sibling eukaryotes, for example in some species of fungi, flowering plants or ants, or in humans. In sociology, the term adelphogamy may also refer to fraternal polyandry. ...
Found on http://en.wikipedia.org/wiki/Adelphogamy

adelphogamy

adelphogamy 1. A form of polyandry in which two or more brothers have or share the same wife, or wives. 2. Possibly, the marriage of a brother and sister to each other. 3. In zoology, mating of brothers and sisters, as with certain kinds of ants. 4. In botany, fertilization between two different individuals derived vegetatively from the same pare...
Found on http://www.wordinfo.info/words/index/info/view_unit/2788/

adelphogamy

sharing of a wife by two or more brothers
Found on http://phrontistery.info/a.html
No exact match found