How to say "sperm" in Japanese

• 精子せいしCommon
  nounThe scientific or biological term for sperm or spermatozoon — the cell itself. Use it when discussing reproduction, biology, or medicine, as in fertility or anatomy contexts.
• 精液せいえきCommon
  nounStrictly means semen, the bodily fluid that contains sperm; its gloss includes 'sperm', but it is really the fluid rather than the cells. Use it when referring to the ejaculate itself, as in medical or sexual contexts.
  唯一ゆいいつの証拠しょうこは、下着したぎに付着ふちゃくしていた精液せいえきの痕跡こんせき。↗

  The only evidence was the traces of semen stuck to the underwear.

精子 is the biological term for an individual sperm cell, while 精液 means semen, the fluid that contains sperm; choose according to whether you mean the cells or the fluid.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 精子せいしsperm
• 精液せいえきsemen
• スペルマsperm
• サーメンsperm
• 精虫せいちゅうspermatozoon
• 白濁液はくだくえきsemen
• 子種こだねsperm
• たねsperm