Dictionary.net

A current, which according to Matteucci, exists in every living muscle, whose tendinous extremities are not equally disposed- one, for example, forming a cord; the other broad and ribbon- like- and which circulates in the muscle fro m the tendinous extremity to the muscular surface.

The electrical c. which exists in an excised muscle, and is demonstrated by placing the poles of a galvanometer, one upon the normal longitudinal surface and one upon the cut surface.