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forcible, sudden expulsion; especially expulsion of semen from the male urethra, a reflex action that occurs as a result of sexual stimulation. adj., adj ejac´ulatory. The three components of semen are expelled in quick succession. First to emerge is a lubricating fluid produced by the bulbourethral glands in the penis; next comes a fluid released into the urethral channel by the prostate, providing a neutral medium within which the sperm cells can swim; and lastly, the spermatic fluid, which has been stored in the seminal vesicles, is likewise injected into the urethral channel and ejaculated. See also reproduction.
premature ejaculation ejaculation consistently occurring either prior to, upon, or immediately after penetration and before desired, taking into account factors such as age, novelty of the specific situation and recent frequency of sexual activity.
retarded ejaculation male orgasmic disorder.
retrograde ejaculation ejaculation with discharge of the semen into the bladder rather than through the urethra to the outside. It often occurs after prostatectomy or spinal cord injury.
delayed ejaculationPersistent difficulty in ejaculating despite normal sexual desire and stimulation.
Most men can achieve orgasm within 5 minutes of active thrusting during sexual intercourse; those with delayed ejaculation either do not have orgasms, cannot ejaculate without prolonged intercourse lasting up to an hour or more, or can do so only while masturbating.
Inability of a male to achieve orgasm despite sexual arousal and stimulation, often after 30 min of sexual activity.
See also: ejaculation