entelodont noun1 •Any extinct pig-like omnivore in the family †Entelodontidae, from the Eocene and Miocene epochs.[T]he Oligocene's signature species were an unsavoury group of pigs and pig-like creatures, foremost among which were the entelodonts, more popularly known as hell pigs, or terminator pigs. — 2018 formsEntelodonts · entelodonts