spermarche n. a man’s first ever ejaculation of sexual fluids. Editorial Note: Pronounced something like “sperm-ARK-ee.” The far more common female equivalent is “menarche,” the first occurrence of menstruation. Etymological Note: From the English sperm, originally from the Greek sperma(t) ‘seed’ + the Greek arkhÄ“. (source: Double-Tongued Dictionary)