Sardis (sär'dis). A city in Asia Minor, and the capital of Lydia. Sardis was situated at the foot of Mount Tmolus, about 50 miles northeast of Smyrna and on the river Pactolus, celebrated for its "golden sands." It was the residence of the famous Croesus, whose name is the synonym for riches. When Cyrus conquered him, b.c. 548, he is said to have taken treasure of the value of $600,000,000. Sardis was the seat of one of the seven churches of Asia, and the Christians seem to have been so corrupted by the prevailing worldliness that they received a severe rebuke. Revelation 3:1-5.