Etymology From Classical Latin avuncul(us) (“maternal uncle”) + -ate.
1
Anthropology, Human sciences, Sciences The relationship between a man and his sister's children, generally her sons.
2
Anthropology, Human sciences, Sciences Among certain tribal peoples, for example, the Korowai, a special relationship between a man and a maternal uncle, and the mutual responsibilities between them.
avunculate
adj
Etymology From Classical Latin avuncul(us) (“maternal uncle”) + -ate.
1
Anthropology, Human sciences, Sciences Pertaining to a society where the avunculate is of central importance.
avunculate society
2
Pertaining to a marriage to one's aunt, uncle, niece or nephew.