-proc·ta I. \ˈpräktə\noun plural combining form Etymology: New Latin, from Greek prōktos : animals having a (specified) type of anus — in names of higher taxa < Entoprocta > < Ectoprocta > II. noun combining form Etymology: New Latin, from Greek prōktos : animal having a (specified) type of anus or buttocks — in generic names of animals < Dasyprocta >