inability to delay ejaculation before it's mutually desirable for either man or both partners.

Also called "preblysis" or "tachorgasmia", premature ejaculation is defined two ways, at least according to Masters and Johnson: when there is male orgasm even before the couple disrobes or when the man is unable to control his ejaculation long enough to satisfy his partner. In his study, Alfred Kinsey noted that 75% of respondents reported ejaculating less than three minutes after penetration. Primates ejaculate in 15 seconds.

a man's inability to postpone ejaculation long enough for it to be pleasurable for himself and his partner.

ejaculation during the early stages of sexual excitement or soon after the insertion of the penis into the vagina

ejaculation occurring very shortly after the onset of sexual activity, before copulation, or before the partner's orgasm ( Men's Support)

A condition in men characterized by persistent or recurrent ejaculation with minimal sexual stimulation before, on, or shortly after penetration and before the person wishes it.

Early ejaculation when a man cannot recognize that he is about to ejaculate and therefore is unable to control it.

Is when a man ejaculates before he is ready too. This is a very individual circumstance. Some men get overly excited and ejaculate before every even having intercourse and others have intercourse for several minutes then ejaculate but personally feel this is not enough time. There is not set time that a man is suppose to last, but if you are suffering from anxiety because of your present situation a good book to acquire is The Multi-Orgasmic Man by Chia and Abrams. There are hundreds of different techniques for lasting longer and solving premature ejaculation! You should first consult with a urologist to rule out any physical condition, and refer to either the sex section at this site or at loveteacher.com.

when a man ejaculates or 'comes' too early

ejaculation that occurs soon after erection.

An unwanted ejaculation that occurs before or very quickly after beginning intercourse. Premature Ovarian Failure Menopause that occurs before the age of 40.

The inability to refrain from ejaculation prior to insertion of the penis into the vagina, or within only a few minutes of penetration such that the sexual encounter is unsatisfactory for the couple, and or deposition of sperm within the vagina in not able to be achieved reliably.

When a man cannot control the timing of his orgasm and ejaculates too quickly.

A condition in which ejaculation occurs before the penis enters the vagina

More rapid occurrence of climax and ejaculation in the male during sexual intercourse than he or his partner wishes.

A condition in which the man becomes so sexually excited that most of the time he ejaculates prior to penetrating the woman's vagina.

Premature ejaculation is ejecting semen from the penis, usually accompanied by orgasm occurring sooner than a man wishes 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. Also referred to as rapid ejaculation, premature ejaculation typically occurs before or shortly after penetration during sexual intercourse. Premature ejaculation is a common complaint, with an estimated 30% of men regularly suffering from the problem.

Ejaculation that occurs prior to the preferred time of the man and/or his partner.

The inability to control or delay ejaculation.

Ejaculation before the man wants it to occur. It could mean that he ejaculates only seconds after his penis goes into the vagina, or he could even ejaculate prior to penetration.

The inability to maintain an erection long enough for mutual satisfaction. Premature ejaculation is divided into primary and secondary forms.

Ejaculation that occurs before or soon after penetration.

Recommendation Conventional Drug Use"In the early 1990s, doctors noted that many depressed men refused to take their medications because it prevented them from reaching a climax, so they prescribed antidepressants, such as Anafranil, Paxil, Prozac or Zoloft to premature ejaculators, who then reported better performance..."

The ejaculation of semen too early in the process of sexual intercourse.

Premature ejaculation (PE), also known as rapid ejaculation, premature climax, early ejaculation, or by the Latin term ejaculatio praecox, is the most common sexual problem in men, affecting 25%-40% of men. It is characterized by a lack of voluntary control over ejaculation. Masters and Johnson stated that a man suffers from premature ejaculation if he ejaculates before his partner achieves orgasm in more than fifty percent of his sexual encounters.