syndyasmian adjective2 •Pertaining to the state of pairing together sexually; said of animals during periods of procreation and while rearing their offspring. •Pertaining to a family structure in which couples pair off (sometimes only temporarily for the rearing of children), but do not practice exclusive cohabitation, instead living with others in a communal household.We should note that matriarchy is easily explained as the almost inevitable successor of syndiasmian marriage or, more generally, of polyandry. — 2010
