impotence

Definitions

Or: impotency , the inability to achieve or maintain enough stiffness in the penis to penetrate the vagina and have intercourse resulting in ejaculation. Impotence, in one form or another, affects approximately 30 million American men. Primary impotence , a rare condition, applies to a man has never had an erection; secondary impotence / situational impotence usually comes on gradually and occurs after a period of normal sexual function.
The medical profession once made the following distinction:
-- impotentia coeundi = the inability to perform sexual intercourse;
-- impotentia erigendi = the inability to have and sustain as erection;
-- impotentia generandi = the inability to procreate; sterility.
Synonym: invirility. Health professionals today prefer the following synonyms: erectile difficulty; erectile disorder; erectile dysfunction; erectile inhibition.

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(Noun) erectile dysfunction