The emission of semen and seminal fluid during the act of preparation for sexual intercourse, i.e. before there is penetration, or shortly after penetration. [https://orcid.org/0000-0002-0736-9199]

Premature ejaculation (PE) is a male sexual dysfunction that occurs when a male expels semen (and most likely experiences orgasm) soon after beginning sexual activity, and with minimal penile stimulation. It has also been called early ejaculation, rapid ejaculation, rapid climax, premature climax and (historically) ejaculatio praecox...