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impotence

impotence , impotency (im´po-tens, -ten-se)

1. Weakness; lack of power. 2. Specifically, inability of the male to achieve and/or maintain penile erection and thus engage in copulation; a manifestation of neurological, vascular, or psychological dysfunction. [L. impotentia, inability, fr. in- neg. + potentia, power]
paretic i. i. caused by a lesion of the nervous system.
psychic i. that caused by psychologic factors.
symptomatic i. i. caused by disturbance of the sensory perineal reflexes.
vasculogenic i. i. due to alterations in the flow of blood to and from the penis.

 

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