ˈdīəˌlel adjective
Etymology: Greek diallēlos reciprocating, confused, in a circle, from di' allēlōn through one another, from dia through + allēlōn of one another — more at parallel
: mating according to a system in which each female is bred to each of two or more males in order to determine the relative importance of sire and dam in the transmission of certain qualities to the offspring