MERIDA, a strong town of Spain, in Estremadura, built by the Romans before the birth of Christ. Here are some fine remains of antiquity, particularly a triumphal arch, but which is considerably decayed. It is seated in an extensive and fertile plain, 47 miles east of Elva, and 45 south by east of Alcantara. W. Long. 6. 4. N. Lat. 38. 42.