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Definition of Premature ejaculation

Premature ejaculation: Ejecting semen from the penis, usually accompanied by orgasm, occurring sooner than a man wants during sexual activity. Premature ejaculation is characterized by a lack of voluntary control over ejaculation that interferes with optimal sexual or psychological well-being in either partner.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=54788
Last Editorial Review: 3/19/2012

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