semen
- A male reproductive fluid containing spermatozoa in suspension, which is secreted by the gonads and other sexual organs. nounThe doctor explained that semen analysis is a common fertility test for men.Semen contains nutrients that help sustain sperm cells on their journey.
- In a broader biological context, it refers to the fluid that is ejaculated by male organisms of various species, which may contain sperm cells and other components. nounThe biologist studied the composition of semen in different animal species.Semen plays a crucial role in the reproductive process of many mammals.