(of a male) unable to copulate
Unable to have an erection.
When a man's penis is unable to become erect.
"Incapable of Sexual Intercourse; Lacking Power; Lacking Physical Strength." Generally used to imply an inability to get or sustain an erection. This word comes to us from Middle English and Old French, back to the Latin "impotens" "lacking in power," a compound of "im" = "not" and "potens" = "powerful, capable."
In medicine, describes the inability to have an erection of the penis adequate for sexual intercourse.
(IM-po-tent): Inability to have an erection adequate for sexual intercourse.
UNABLE TO ENGAGE IN SEXUAL INTERCOURSE
The inability to achieve or maintain an erection.