FC Trias got its name because it is a fusion of three earlier clubs.
However, the club grounds are also not far from the Winterswijk quarry. Where muschelkalk stone from the Triassic, over 200 million years ago, is mined. The Triassic got its name from its three distinct rock layers. The Dutch word for Triassic is Trias. In the Winterswijk quarry, recently, a Triassic beetle was discovered; and,earlier, Triassic marine reptiles.