Lex terae

LEX TERAE. The law of the land. The phrase is used to distinguish this from the civil or Roman law.
     2. By lex terrae, as used in Magna Charta, is meant one process of law, namely, proceeding by indictment or presentment of good and lawful men. 2 Inst. 50; 19 Wend. 659; 4 Dev. R. 15. in the constitution of Tennessee, the words "the law of the land" signify a general and public law, operating equally upon every member of the community. 10 Yerg. 71.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.