In medical jurisprudence. The incapacity for copulation or propagating the species. Properly used of the male; but it has also been used synonymously with “sterility.” Griffeth v. Griffeth, 162 111. 368, 44 N. E. 820; Payne v. Payne, 46 Minn. 467, 49 N. W. 230, 24 Am. St Rep. 240; Kempf v. Kempf, 34 Mo. 213.
Impotentla excusat legem. Co. Litt. 29. The impossibility of doing what is required by the law excuses from the performance.