Ambulatoria voluntas

AMBULATORIA VOLUNTAS. A phrase used to designate that a man has the power to alter his will or testament as long as he lives. This form of phrase frequently occurs in writers on the civil law; as ambulatoria res, ambulatoria actio, potestas, conditio, &c. Calvini Lexic.

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