Definition of eusocial
: living in a cooperative group in which usually one female and several males are reproductively active and the nonbreeding individuals care for the young or protect and provide for the group eusocial termites, ants, and naked mole rats
eusocialityplay \ˌyü-ˌsō-shē-ˈa-lə-tē\ noun
Recent Examples of eusocial from the Web
The most familiar examples are the fully eusocial ants, in which many sterile female workers do all the chores, a single large queen lays all the eggs, and a sprinkling of male ants, or drones, supply the sperm.
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